Before flying to Atlanta and visiting LISA 2004 I just released FAI 2.6.5 which has only small changes. The support for aptitude in the command install_packages (since 2.6.4) is very interesting, since aptitude could replace tasksel and apt-get. With aptitude you can install, remove, hold, purge all kinds of packages (even the tasks from tasksel) and use nice regular expressions to specify a buch of packages (Hi Henning, that's for you).
New in FAI 2.6.5 - fcopy now handles svn and arch subdirectories, added option -I - install_packages does not remove unknown package names when using aptitude, so aptitude's search patterns can be used -- regards Thomas