I've rolled up R-2.0.0.tar.gz a short while ago. This is a new version
with a number of new features. See below for the details.

As was the case with R 1.0.0, this new version represents a coming of
age more than a radical change to R. We do plan to celebrate the new
major version with press releases and such.

The release will be available from 

http://cran.r-project.org/src/base/R-2/R-2.0.0.tar.gz

or you might wait for it to be mirrored at a CRAN site nearer to you.
Binaries for various platforms will appear in due course.
 
There is also a version split for floppies.


        For the R Core Team
        Peter Dalgaard




These are the md5sums for the freshly created files, in case you wish
to check that they are uncorrupted:

3900bca37cabb4b76b8d736d51cc9251  R-2.0.0.tar.gz
4a3c7595b112d879997f7455fa8c1c0d  R-2.0.0.tar.gz-split.aa
45d376c7c533c62c657ef0fafac8a784  R-2.0.0.tar.gz-split.ab
7dbdb241e1fb7263701719ea856ebe41  R-2.0.0.tar.gz-split.ac
1e1077f7593778b79e9b0d5c676af63b  R-2.0.0.tar.gz-split.ad
6f4ffaa48a54e002f586f80fd4f2461c  R-2.0.0.tar.gz-split.ae
34b62bb31f6ecf84da329d21c2a21561  R-2.0.0.tar.gz-split.af
c880f8f06ca3fe367bba6757e9cfbf32  R-2.0.0.tar.gz-split.ag
b1a2d17d3ae523d04ffc8d3c6db4b67b  R-2.0.0.tar.gz-split.ah


Here is the relevant part of the NEWS file


                CHANGES IN R VERSION 2.0.0


USER-VISIBLE CHANGES

    o   The stub packages from 1.9.x have been removed: the library()
        function selects the new home for their code.

    o   `Lazy loading' of R code has been implemented, and is used for
        the standard and recommended packages by default.  Rather than
        keep R objects in memory, they are kept in a database on disc
        and only loaded on first use.  This accelerates startup (down
        to 40% of the time for 1.9.x) and reduces memory usage -- the
        latter is probably unimportant of itself, but reduces
        commensurately the time spent in garbage collection.

        Packages are by default installed using lazy loading if they
        have more than 25Kb of R code and did not use a saved image.
        This can be overridden by INSTALL --[no-]lazy or via a field
        in the DESCRIPTION file.  Note that as with --save, any other
        packages which are required must be already installed.

        As the lazy-loading databases will be consulted often, R
        will be slower if run from a slow network-mounted disc.

    o   All the datasets formerly in packages 'base' and 'stats' have
        been moved to a new package 'datasets'.  data() does the
        appropriate substitution, with a warning.  However, calls to
        data() are not normally needed as the data objects are visible
        in the 'datasets' package.

        Packages can be installed to make their data objects visible
        via R CMD INSTALL --lazy-data or via a field in the
        DESCRIPTION file.

    o   Package 'graphics' has been split into 'grDevices' (the graphics
        devices shared between base and grid graphics) and 'graphics'
        (base graphics).  Each of the 'graphics' and 'grid' packages
        load 'grDevices' when they are attached.  Note that
        ps.options() has been moved to grDevices and user hooks may
        need to be updated.

    o   The semantics of data() have changed (and were incorrectly
        documented in recent releases) and the function has been moved
        to package 'utils'.  Please read the help page carefully if
        you use the 'package' or 'lib.loc' arguments.

        data() now lists datasets, and not just names which data() accepts.

    o   Dataset 'phones' has been renamed to 'WorldPhones'.

    o   Datasets 'sunspot.month' and 'sunspot.year' are available
        separately but not via data(sunspot) (which was used by package
        lattice to retrieve a dataset 'sunspot').

    o   Packages must have been re-installed for this version, and
        library() will enforce this.

    o   Package names must now be given exactly in library() and
        require(), regardless of whether the underlying file system is
        case-sensitive or not.  So 'library(mass)' will not work, even
        on Windows.

    o   R no longer accepts associative use of relational operators.
        That is, 3 < 2 < 1 (which used to evalute as TRUE!) now causes
        a syntax error.  If this breaks existing code, just add
        parentheses -- or braces in the case of plotmath.

    o   The R parser now allows multiline strings, without escaping
        the newlines with backslashes (the old method still works).
        Patch by Mark Bravington.


NEW FEATURES

    o   There is a new atomic vector type, class "raw".  See ?raw for
        full details including the operators and utility functions provided.

    o   The default barplot() method by default uses a
        gamma-corrected grey palette (rather than the heat color
        palette) for coloring its output when given a matrix.

    o   The 'formula' method for boxplot() has a 'na.action' argument,
        defaulting to NULL.  This is mainly useful if the response
        is a matrix when the previous default of 'na.omit' would omit
        entire rows.  (Related to PR#6846.)

        boxplot() and bxp() now obey global 'par' settings and also
        allow the specification of graphical options in more detail,
        compatibly with S-PLUS (fulfilling wishlist entry PR#6832)
        thanks to contributions from Arni Magnusson.  For consistency,
        'boxwex' is not an explicit argument anymore.

    o   chull() has been moved to package graphics (as it uses xy.coords).

    o   There is now a coef() method for summaries of "nls" objects.

    o   compareVersion(), packageDescription() and read.00Index()
        have been moved to package 'utils'.

    o   convolve(), fft(), mvfft() and nextn() have been moved to
        package stats.

    o   coplot() now makes use of cex.lab and font.lab par() settings.

    o   cumsum/prod/max/min() now preserve names.

    o   data(), .path.packages() and .find.packages() now interpret
        package = NULL to mean all loaded packages.

    o   data.frame() and its replacement methods remove the names from
        vector columns.  Using I() will ensure that names are
        preserved.

    o   data.frame(check.names = TRUE) (the default) enforces unique
        names, as S does.

    o   .Defunct() now has 'new' and 'package' arguments like those of
        .Deprecated().

    o   The plot() method for "dendrogram" objects now respects many more
        nodePar and edgePar settings and for edge labeling computes the
        extents of the diamond more correctly.

    o   deparse(), dput() and dump() have a new 'control' argument to
        control the level of detail when deparsing.  dump() defaults to
        the most detail, the others default to less.  See ?.deparseOpts
        for the details.

        They now evaluate promises by default: see ?dump for details.

    o   dir.create() now expands '~' in filenames.

    o   download.file() has a new progress meter (under Unix) if the
        length of the file is known -- it uses 50 equals signs.

    o   dyn.load() and library.dynam() return an object describing the
        DLL that was loaded.  For packages with namespaces, the DLL
        objects are stored in a list within the namespace.

    o   New function eapply() - apply for environments.  The supplied
        function is applied to each element of the environment; the order
        of application is not specified.

    o   edit() and fix() use the object name in the window caption on
        some platforms (e.g. Windows).

    o   Function file.edit() function added: like file.show(), but
        allows editing.

    o   Function file.info() can return file sizes > 2G if the
        underlying OS supports such.

    o   fisher.test(*, conf.int=FALSE) allows the confidence interval
        computation to be skipped.

    o   formula() methods for classes "lm" and "glm" used the expanded
        formula (with '.' expanded) from the terms component.

    o   The `formula' method for ftable() now looks for variables in the
        environment of the formula before the usual search path.

    o   A new function getDLLRegisteredRoutines() returns information
        about the routines available from a DLL that were explicitly
        registered with R's dynamic loading facilities.

    o   A new function getLoadedDLLs() returns information about the
        DLLs that are currently loaded within this session.

    o   The package element returned by getNativeSymbolInfo() contains
        reference to both the internal object used to resolve symbols
        with the DLL, and the internal DllInfo structure used to
        represent the DLL within R.

    o   help() now returns information about available documentation for
        a given topic, and notifies about multiple matches.  It has a
        separate print() method.

        If the latex help files were not installed, help() will offer
        to create a latex file on-the-fly from the installed .Rd file.

    o   heatmap() has a new argument 'reorderfun'.

    o   Most versions of install.packages() have an new optional
        argument 'dependencies = TRUE' which will not only fetch the
        packages but also their uninstalled dependencies and their
        dependencies ....

        The Unix version of install.packages() attempts to install
        packages in an order that reflects their dependencies.  (This
        is not needed for binary installs as used under Windows.)

    o   interaction() has new argument 'sep'.

    o   interaction.plot() allows 'type = "b"' and doesn't give spurious
        warnings when passed a matplot()-only argument such as 'main'.

    o   is.integer() and is.numeric() always return FALSE for a
        factor.  (Previously they were true and false respectively for
        well-formed factors, but it is possible to create factors
        with non-integer codes by underhand means.)

    o   New functions is.leaf(), dendrapply() and a labels() method for
        dendrogram objects.

    o   legend() has an argument 'pt.lwd' and setting 'density' now works
        because 'angle' now defaults to 45 (mostly contributed by Uwe Ligges).

    o   library() now checks the version dependence (if any) of
        required packages mentioned in the Depends: field of the
        DESCRIPTION file.

    o   load() now detects and gives a warning (rather than an error)
        for empty input, and tries to detect (but not correct) files
        which have had LF replaced by CR.

    o   ls.str() and lsf.str() now return an object of class "ls_str" which
        has a print method.

    o   make.names() has a new argument allow_, which if false allows
        its behaviour in R 1.8.1 to be reproduced.

    o   The 'formula' method for mosaicplot() has a 'na.action' argument
        defaulting to 'na.omit'.

    o   model.frame() now warns if it is given data = newdata and it
        creates a model frame with a different number of rows from
        that implied by the size of 'newdata'.

        Time series attributes are never copied to variables in the
        model frame unless na.action = NULL.  (This was always the
        intention, but they sometimes were as the result of an earlier
        bug fix.)

    o   There is a new 'padj' argument to mtext() and axis().
        Code patch provided by Uwe Ligges (fixes PR#1659 and PR#7188).

    o   Function package.dependencies() has been moved to package 'tools'.

    o   The 'formula' method for pairs() has a 'na.action' argument,
        defaulting to 'na.pass', rather than the value of
        getOption("na.action").

    o   There are five new par() settings:

        'family' can be used to specify a font family for graphics
        text.  This is a device-independent family specification
        which gets mapped by the graphics device to a device-specific
        font specification (see, for example, postscriptFonts()).
        Currently, only PostScript, PDF, X11, Quartz, and Windows
        respond to this setting.

        'lend', 'ljoin', and 'lmitre' control the cap style and
        join style for drawing lines (only noticeable on thick lines
        or borders).  Currently, only PostScript, PDF, X11, and Quartz
        respond to these settings.

        'lheight' is a multiplier used in determining the vertical
        spacing of multi-line text.

        All of these settings are currently only available via par()
        (i.e., not in-line as arguments to plot(), lines(), ...)

    o   PCRE (as used by grep etc) has been updated to version 5.0.

    o   A 'version' argument has been added to pdf() device.  If this is
        set to "1.4", the device will support transparent colours.

    o   plot.xy(), the workhorse function of points(), lines() and
        plot.default() now has 'lwd' as explicit argument instead of
        implicitly in '...', and now recycles lwd where it makes
        sense, i.e. for line-based plot symbols.

    o   The png() and jpeg() devices (and the bmp() device under Windows)
        now allow a nominal resolution to be recorded in the file.

    o   New functions to control mapping from device-independent
        graphics font family to device-specific family:
        postscriptFont() and postscriptFonts() (for both postscript()
        and pdf()); X11Font() and X11Fonts(); windowsFont() and
        windowsFonts(); quartzFont() and quartzFonts().

    o   power (x^y) has optimised code for y == 2.

    o   prcomp() is now generic, with a formula method (based on an
        idea of Jari Oksanen).

        prcomp() now has a simple predict() method.

    o   printCoefmat() has a new logical argument 'signif.legend'.

    o   quantile() has the option of several methods described in
        Hyndman & Fan (1996). (Contributed by Rob Hyndman.)

    o   rank() has two new 'ties.method's, "min" and "max".

    o   New function read.fortran() reads Fortran-style fixed-format
        specifications.

    o   read.fwf() reads multiline records, is faster for large files.

    o   read.table() now accepts "NULL", "factor", "Date" and
        "POSIXct" as possible values of colClasses, and colClasses can
        be a named character vector.

    o   readChar() can now read strings with embedded nuls.

    o   The "dendrogram" method for reorder() now has a 'agglo.FUN'
        argument for specification of a weights agglomeration
        function.

    o   New reorder() method for factors, slightly extending that in
        lattice.  Contributed by Deepayan Sarkar.

    o   Replaying a plot (with replayPlot() or via autoprinting) now
        automagically opens a device if none is open.

    o   replayPlot() issues a warning if an attempt is made to replay
        a plot that was recorded using a different R version (the
        format for recorded plots is not guaranteed to be stable
        across different R versions).  The Windows-menu equivalent
        (History...Get from variable) issues a similar warning.

    o   reshape() can handle multiple 'id' variables.

    o   It is now possible to specify colours with a full alpha
        transparency channel via the new 'alpha' argument to the
        rgb() and hsv() functions, or as a string of the form "#RRGGBBAA".

        NOTE: most devices draw nothing if a colour is not opaque,
        but PDF and Quartz devices will render semitransparent colours.

        A new argument 'alpha' to the function col2rgb()
        provides the ability to return the alpha component of
        colours (as well as the red, green, and blue components).

    o   save() now checks that a binary connection is used.

    o   seek() on connections now accepts and returns a double for the
        file position.  This allows >2Gb files to be handled on a
        64-bit platform (and some 32-bit platforms).

    o   source() with 'echo = TRUE' uses the function source attribute
        when displaying commands as they are parsed.

    o   setClass() and its utilities now warn if either superclasses
        or classes for slots are undefined.  (Use setOldClass to
        register S3 classes for use as slots)

    o   str(obj) now displays more reasonably the STRucture of S4 objects.

        It is also improved for language objects and lists with promise
        components.

        The method for class "dendrogram" has a new argument 'stem' and
        indicates when it's not printing all levels (as typically when
        e.g., 'max.level = 2').

        Specifying 'max.level = 0' now allows to suppress all but the top
        level for hierarchical objects such as lists. This is different
        to previous behavior which was the default behavior of giving all
        levels is unchanged.  The default behavior is unchanged but now
        specified by 'max.level = NA'.

    o   system.time() has a new argument 'gcFirst' which, when TRUE,
        forces a garbage collection before timing begins.

    o   tail() of a matrix now displays the original row numbers.

    o   The default method for text() now coerces a factor to character
        and not to its internal codes.  This is incompatible with S
        but seems what users would expect.

        It now also recycles (x,y) to the length of 'labels' if that
        is longer.  This is now compatible with grid.text() and
        S. (See also PR#7084.)

    o   TukeyHSD() now labels comparisons when applied to an
        interaction in an aov() fit.  It detects non-factor terms in
        'which' and drops them if sensible to do so.

    o   There is now a replacement method for window(), to allow a
        range of values of time series to be replaced by specifying the
        start and end times (and optionally a frequency).

    o   If writeLines() is given a connection that is not open, it now
        attempts to open it in mode = "wt" rather than the default
        mode specified when creating the connection.

    o   The screen devices x11(), windows() and quartz() have a new
        argument 'bg' to set the default background colour.


    o   Subassignments involving NAs and with a replacement value of
        length > 1 are now disallowed.  (They were handled
        inconsistently in R < 2.0.0, see PR#7210.)  For data frames
        they are disallowed altogether, even for logical matrix indices
        (the only case which used to work).

    o   The way the comparison operators handle a list argument has
        been rationalized so a few more cases will now work -- see
        ?Comparison.

    o   Indexing a vector by a character vector was slow if both the
        vector and index were long (say 10,000).  Now hashing is used
        and the time should be linear in the longer of the lengths
        (but more memory is used).

    o   Printing a character string with embedded nuls now prints the
        whole string, and non-printable characters are represented by
        octal escape sequences.

    o   Objects created from a formally defined class now include the
        name of the corresponding package as an attribute in the
        object's class.  This allows packages with namespaces to have
        private (non-exported) classes.

    o   Changes to package 'grid':

        - Calculation of number of circles to draw in circleGrob now
          looks at length of y and r as well as length of x.

        - Calculation of number of rectangles to draw in rectGrob now
          looks at length of y, w, and h as well as length of x.

        - All primitives (rectangles, lines, text, ...) now handle
          non-finite values (NA, Inf, -Inf, NaN) for locations and
          sizes.

          Non-finite values for locations, sizes, and scales of
          viewports result in error messages.

          There is a new vignette ("nonfinite") which describes this
          new behaviour.

        - Fixed (unreported) bug in drawing circles.  Now checks that
          radius is non-negative.

        - downViewport() now reports the depth it went down to find a
          viewport.  Handy for "going back" to where you started, e.g., ...

            depth <- downViewport("vpname")
            <draw stuff>
            upViewport(depth)

        - The "alpha" gpar() is now combined with the alpha channel of
          colours when creating a gcontext as follows: (internal C code)

            finalAlpha = gpar("alpha")*(R_ALPHA(col)/255)

          This means that gpar(alpha=) settings now affect internal
          colours so grid alpha transparency settings now are sent to
          graphics devices.

          The alpha setting is also cumulative.  For example, ...

            grid.rect(width=0.5, height=0.5,
                      gp=gpar(fill="blue"))              # alpha = 1
            pushViewport(viewport(gp=gpar(alpha=0.5)))
            grid.rect(height=0.25, gp=gpar(fill="red"))  # alpha = 0.5
            pushViewport(viewport(gp=gpar(alpha=0.5)))
            grid.rect(width=0.25, gp=gpar(fill="red"))   # alpha = 0.25 !

        - Editing a gp slot in a grob is now incremental.  For example ...

            grid.lines(name="line")
            grid.edit("line", gp=gpar(col="red")) # line turns red
            grid.edit("line", gp=gpar(lwd=3)) # line becomes thick
                                              # AND STAYS red

        - The "cex" gpar is now cumulative.  For example ...

            grid.rect(height=unit(4, "char")) # cex = 1
            pushViewport(viewport(gp=gpar(cex=0.5)))
            grid.rect(height=unit(4, "char")) # cex = 0.5
            pushViewport(viewport(gp=gpar(cex=0.5)))
            grid.rect(height=unit(4, "char")) # cex = 0.125 !!!

        - New childNames() function to list the names of children
          of a gTree.

        - The "grep" and "global" arguments have been implemented for
          grid.[add|edit|get|remove]Grob() functions.

          The "grep" argument has also been implemented for the
          grid.set() and setGrob().

        - New function grid.grab() which creates a gTree from the
          current display list (i.e., the current page of output can
          be converted into a single gTree object with all grobs
          on the current page as children of the gTree and all the
          viewports used in drawing the current page in the childrenvp
          slot of the gTree).

        - New "lineend", "linejoin", and "linemitre" gpar()s:

          line end can be "round", "butt", or "square".
          line join can be "round", "mitre", or "bevel".
          line mitre can be any number larger than 1
            (controls when a mitre join gets turned into a bevel join;
             proportional to angle between lines at join;
             very big number means that conversion only happens for lines
             that are almost parallel at join).

        - New grid.prompt() function for controlling whether the user is
          prompted before starting a new page of output.

          Grid no longer responds to the par(ask) setting in the "graphics"
          package.

    o   The tcltk package has had the tkcmd() function renamed as
        tcl() since it could be used to invoke commands that had
        nothing to do with Tk. The old name is retained, but will be
        deprecated in a future release. Similarly, we now have
        tclopen(), tclclose(), tclread(), tclputs(), tclfile.tail(),
        and tclfile.dir() replacing counterparts starting with "tk",
        with old names retained for now.


UTILITIES

    o   R CMD check now checks for file names in a directory that
        differ only by case.

    o   R CMD check now checks Rd files using R code from package tools,
        and gives refined diagnostics about "likely" Rd problems (stray
        top-level text which is silently discarded by Rdconv).

    o   R CMD INSTALL now fails for packages with incomplete/invalid
        DESCRIPTION metadata, using new code from package tools which is
        also used by R CMD check.

    o   list_files_with_exts (package tools) now handles zipped directories.

    o   Package 'tools' now provides Rd_parse(), a simple top-level
        parser/analyzer for R documentation format.

    o   tools::codoc() (and hence R CMD check) now checks any documentation
        for registered S3 methods and unexported objects in packages
        with namespaces.

    o   Package 'utils' contains several new functions:

        - Generics toBibtex() and toLatex() for converting
          R objects to BibTeX and LaTeX (but almost no methods yet).

        - A much improved citation() function which also has a package
          argument.  By default the citation is auto-generated from
          the package DESCRIPTION, the file 'inst/CITATION' can be
          used to override this, see help(citation) and
          help(citEntry).

        - sessionInfo() can be used to include version information about
          R and R packages in text or LaTeX documents.


DOCUMENTATION

    o   The DVI and PDF manuals are now all made on the paper specified
        by R_PAPERSIZE (default 'a4'), even the .texi manuals which
        were made on US letter paper in previous versions.

    o   The reference manual now omits 'internal' help pages.

    o   There is a new help page shown by help("Memory-limits") which
        documents the current design limitations on large objects.

    o   The format of the LaTeX version of the documentation has
        changed.  The old format is still accepted, but only the new
        resolves cross-references to object names containing _, for
        example.

    o   HTML help pages now contain a reference to the package and
        version in the footer, and HTML package index pages give their
        name and version at the top.

    o   All manuals in the 2.x series have new ISBN numbers.

    o   The 'R Data Import/Export' manual has been revised and has a
        new chapter on `Reading Excel spreadsheets'.


C-LEVEL FACILITIES

    o   The PACKAGE argument for .C/.Call/.Fortran/.External can be
        omitted if the call is within code within a package with a
        namespace.  This ensures that the native routine being called
        is found in the DLL of the correct version of the package if
        multiple versions of a package are loaded in the R session.
        Using a namespace and omitting the PACKAGE argument is
        currently the only way to ensure that the correct version is
        used.

    o   The header Rmath.h contains a definition for R_VERSION_STRING
        which can be used to track different versions of R and libRmath.

    o   The Makefile in src/nmath/standalone now has 'install' and
        'uninstall' targets -- see the README file in that directory.

    o   More of the header files, including Rinternals.h, Rdefines.h and
        Rversion.h, are now suitable for calling directly from C++.

    o   Configure looks to a suitable option for inlining C code which
        made available as macro R_INLINE: see `Writing R Extensions'
        for further details.


DEPRECATED & DEFUNCT

    o   Direct use of R INSTALL|REMOVE|BATCH|COMPILE|SHLIB has been
        removed: use R CMD instead.

    o   La.eigen(), tetragamma(), pentagamma(), package.contents() and
        package.description() are defunct.

    o   The undocumented function newestVersion() is no longer exported
        from package utils.  (Mainly because it was not completely general.)

    o   C-level entry point ptr_R_GetX11Image has been removed, as it
        was replaced by R_GetX11Image at 1.7.0.

    o   The undocumented C-level entry point R_IsNaNorNA has been
        removed.  It was used in a couple of packages, and should be
        replaced by a call to the documented macro ISNAN.

    o   The gnome/GNOME graphics device is now defunct.


INSTALLATION CHANGES

    o   Arithmetic supporting +/-Inf, NaNs and the IEC 60559 (aka
        IEEE 754) standard is now required -- the partial and often
        untested support for more limited arithmetic has been removed.

        The C99 macro isfinite is used in preference to finite if available
        (and its correct functioning is checked at configure time).

        Where isfinite or finite is available and works, it is used as
        the substitution value for R_FINITE.  On some platforms this
        leads to a performance gain.  (This applies to compiled code
        in packages only for isfinite.)

    o   The dynamic libraries libR and libRlapack are now installed in
        R_HOME/lib rather than R_HOME/bin.

    o   When --enable-R-shlib is specified, the R executable is now a
        small executable linked against libR: see the R-admin manual
        for further discussion.  The 'extra' libraries bzip2, pcre,
        xdr and zlib are now compiled in a way that allows the code to
        be included in a shared library only if this option is
        specified, which might improve performance when it is not.

    o   The main R executable is now R_HOME/exec/R not R_HOME/R.bin, to
        ease issues on MacOS X.  (The location is needed when debugging
        core dumps, on other platforms.)

    o   Configure now tests for 'inline' and alternatives, and the
        src/extra/bzip2 code now (potentially) uses inlining where
        available and not just under gcc.

    o   The XPG4 sed is used on Solaris for forming dependencies,
        which should now be done correctly.

    o   Makeinfo 4.5 or later is now required for building the HTML and
        Info versions of the manuals.  However, binary distributions
        need to be made with 4.7 or later to ensure some of the
        links are correct.

    o   f2c is not allowed on 64-bit platforms, as it uses longs for
        Fortran integers.

    o   There are new options on how to make the PDF version of the
        reference manual -- see the 'R Administration and Installation
        Manual' section 2.2.

    o   The concatenated Rd files in the installed 'man' directory are
        now compressed and the R CMD check routines can read the
        compressed files.

    o   There is a new configure option --enable-linux-lfs that will
        build R with support for > 2Gb files on suitably recent 32-bit
        Linux systems.


PACKAGE INSTALLATION CHANGES

    o   The DESCRIPTION file of packages may contain a 'Imports:'
        field for packages whose namespaces are used but do not need
        to be attached.  Such packages should no longer be listed in
        'Depends:'.

    o   There are new optional fields 'SaveImage', 'LazyLoad' and
        'LazyData' in the DESCRIPTION file.  Using 'SaveImage' is
        preferred to using an empty file 'install.R'.

    o   A package can contain a file 'R/sysdata.rda' to contain
        system datasets to be lazy-loaded into the namespace/package
        environment.

    o   The packages listed in 'Depends' are now loaded before a package
        is loaded (or its image is saved or it is prepared for lazy
        loading).  This means that almost all uses of R_PROFILE.R and
        install.R are now unnecessary.

    o   If installation of any package in a bundle fails, R CMD
        INSTALL will back out the installation of all of the bundle,
        not just the failed package (on both Unix and Windows).


BUG FIXES

    o   Complex superassignments were wrong when a variable with the same
        name existed locally, and were not documented in R-lang.

    o   rbind.data.frame() dropped names/rownames from columns in all
        but the first data frame.

    o   The dimnames<- method for data.frames was not checking the
        validity of the row names.

    o   Various memory leaks reported by valgrind have been plugged.

    o   gzcon() connections would sometimes read the crc bytes from
        the wrong place, possibly uninitialized memory.

    o   Rd.sty contained a length \middle that was not needed after a
        revision in July 2000.  It caused problems with LaTeX systems
        based on e-TeX which are starting to appear.

    o   save() to a connection did not check that the connection was
        open for writing, nor that non-ascii saves cannot be made to a
        text-mode connection.

    o   phyper() uses a new algorithm based on Morten Welinder's bug
        report (PR#6772).  This leads to faster code for large arguments
        and more precise code, e.g. for phyper(59, 150,150, 60, lower=FALSE).
        This also fixes bug (PR#7064) about fisher.test().

    o   print.default(*, gap = <n>) now in principle accepts all
        non-negative values <n>.

    o   smooth.spline(...)$pen.crit had a typo in its computation;
        note this was printed in print.smooth.spline(*) but not used in
        other "smooth.spline" methods.

    o   write.table() handles zero-row and zero-column inputs correctly.

    o   debug() works on trivial functions instead of crashing. (PR#6804)

    o   eval() could alter a data.frame/list second argument, so
        with(trees, Girth[1] <- NA) altered 'trees' (and any copy of
        'trees' too).

    o   cor() could corrupt memory when the standard deviation was
        zero. (PR#7037)

    o   inverse.gaussian() always printed 1/mu^2 as the link function.

    o   constrOptim() now passes ... arguments through optim to the
        objective function.

    o   object.size() now has a better estimate for character vectors:
        it was in general too low (but only significantly so for
        very short character strings) but over-estimated NA and
        duplicated elements.

    o   quantile() now interpolates correctly between finite and
        infinite values (giving +/-Inf rather than NaN).

    o   library() now gives more informative error messages mentioning
        the package being loaded.

    o   Building the reference manual no longer uses roman upright
        quotes in typewriter output.

    o   model.frame() no longer builds invalid data frames if the
        data contains time series and rows are omitted by na.action.

    o   write.table() did not escape quotes in column names.  (PR#7171)

    o   Range checks missing in recursive assignments using [[ ]].  (PR#7196)

    o   packageStatus() reported partially-installed bundles as
        installed.

    o   apply() failed on an array of dimension >=3 when for each
        iteration the function returns a named vector of length >=2.
        (PR#7205)

    o   The GNOME interface was in some circumstances failing if run
        from a menu -- it needed to always specify that R be interactive.

    o   depMtrxToStrings (part of pkgDepends) applied nrow() to a
        non-matrix and aborted on the result.

    o   Fix some issues with nonsyntactical names in modelling code
        (PR#7202), relating to backquoting.  There are likely more.

    o   Support for S4 classes that extend basic classes has been fixed
        in several ways.  as() methods and [EMAIL PROTECTED] should work better.

    o   hist() and pretty() accept (and ignore) infinite values.  (PR#7220)

    o   It is no longer possible to call gzcon() more than once on a
        connection.

    o   t.test() now detects nearly-constant input data.  (PR#7225)

    o   mle() had problems if ndeps or parscale was supplied in the
        control arguments for optim().  Also, the profiler is now more
        careful to reevaluate modified mle() calls in its parent
        environment.

    o   Fix to rendering of accented superscripts and subscripts e.g.,
        expression((b[dot(a)])).  (Patch from Uwe Ligges.)

    o   attach(*, pos=1) now gives a warning (and will give an error).

    o   power.*test() now gives an error when 'sig.level' is outside [0,1].
        (PR#7245)

    o   Fitting a binomial glm with a matrix response lost the names of
        the response, which should have been transferred to the
        residuals and fitted values.

    o   print.ts() could get the year wrong because rounding issue
        (PR#7255)


-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - ([EMAIL PROTECTED])             FAX: (+45) 35327907

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