Hey guys,

We're pretty close to releasing SDK 1.4.3. You can download the prerelease
SDKs for local verification at:

http://code.google.com/p/googleappengine/downloads/list

As usual, these are local SDK only and shouldn't work when deployed, though
some features may partially work due to the fact that the backends may have
partially been pushed (protip: don't do it).

Release notes are below. Lots of cool stuff in this release! Big ones? Files
API for programmatic blobstore writes, Prospective Search API, concurrent
requests for Java (this is huge), deferred and Remote API libraries for Java
+ lots of bug fixes.

Python 1.4.3
=================================
- Added Files API that allows writing to and reading from files in
blobstore.
- You can now specify cron execution for a time interval between a start and
end
  time.
- You can now configure the specific application version to which a task
queue
  or cron job will send requests.
- The Admin Console Task Queues page now displays a more accurate estimate
of
  queue size for queues containing more than 2000 tasks.
- The Prospective Search API (formerly named the Matcher API) is available
for
  use by all applications. This API is still experimental, so applications
will
  be limited to a maximum of 1000 subscriptions.
- The Testbed API provides easy configuration of stub libraries for local
  integration tests.
- In the Images API, the quality parameter was added to the resize, rotate,
  horizontal_flip, vertical_flip, crop and im_feeling_lucky methods.
- Fixed an issue where static file serving in the dev_appserver didn't
support
  etags.
    http://code.google.com/p/googleappengine/issues/detail?id=368
- An error is now raised when the script mapping in the app.yaml file is
missing
  the .py file extension.
    http://code.google.com/p/googleappengine/issues/detail?id=976
- Fixed an issue where no link was displayed in the Admin Console blobstore
  viewer for an unnamed blob.
- Fixed an issue where the Admin Console data viewer couldn't edit entities
  with ByteString properties.
    http://code.google.com/p/googleappengine/issues/detail?id=2367
- Fixed an issue where the Admin Console crashed when using a non-ascii
  key_name.
    http://code.google.com/p/googleappengine/issues/detail?id=2451
- Fixed an issue filtering on __key__ while using the --use_sqlite option
with
  the dev_appserver.
    http://code.google.com/p/googleappengine/issues/detail?id=3232
- The Disable Application admin function has been button-ized.
    http://code.google.com/p/googleappengine/issues/detail?id=4323
- Fixed an SDK issue where debugging logging wouldn't correctly print
URLFetch
  payloads.
    http://code.google.com/p/googleappengine/issues/detail?id=783
- Fixed an SDK issue where an incompatible line ending was used on blob
upload.
    http://code.google.com/p/googleappengine/issues/detail?id=3328
- Added more graceful handling of the missing mapreduce.yaml file when the
user
  has enabled the Datastore Admin but is not otherwise using the MapReduce
  framework.
    http://code.google.com/p/googleappengine/issues/detail?id=3903
- Fixed an issue where the method webapp_add_wsgi_middleware was no longer
  recognized.
    http://code.google.com/p/googleappengine/issues/detail?id=4236

Java 1.4.3
=============
- Added FileService API that allows writing to and reading from files in
  blobstore.
- You can now specify cron execution for a time interval between a start and
end
  time.
- Java applications can enable concurrent request support by setting
  <threadsafe> to True in their appengine-web.xml. This flag indicates that
  request handlers for your app are thread safe and multiple request
handlers
  may safely run at the same time in the same memory space for your
application.
- Deferred library support now available in Java.
    http://code.google.com/p/googleappengine/issues/detail?id=2381
- Remote API library now available in Java. This can be used in conjunction
with
  apps using either the Java or the Python runtime.
- The Java SDK now supports kindless and ancestor only queries.
- Fixed an issue where JAX-WS clients in the SDK could not handle receiving
a
  SOAP fault.
- Fixed an issue where the SDK did not support fetching HTTPS URLs.
- Fixed an issue where no link was displayed in the Admin Console blobstore
  viewer for an unnamed blob.
- Fixed an issue where the Admin Console data viewer couldn't edit entities
  with ByteString properties.
    http://code.google.com/p/googleappengine/issues/detail?id=2367
- Fixed an issue where the Admin Console crashed when using a non-ascii
  key_name.
    http://code.google.com/p/googleappengine/issues/detail?id=2451
- The Disable Application admin function has been button-ized.
    http://code.google.com/p/googleappengine/issues/detail?id=4323
- Fixed a regex validation issue in the queue.xml file that caused some
uploads
  to break.
    http://code.google.com/p/googleappengine/issues/detail?id=4365
- Fixed an issue where the Java SDK Task Queue did not support 10 minute
  timeouts.
    http://code.google.com/p/googleappengine/issues/detail?id=4564
- Fixed an issue where the Channel API in the SDK didn't properly send
messages
  with unicode characters.
    http://code.google.com/p/googleappengine/issues/detail?id=4675




--
Ikai Lan
Developer Programs Engineer, Google App Engine
Blogger: http://googleappengine.blogspot.com
Reddit: http://www.reddit.com/r/appengine
Twitter: http://twitter.com/app_engine

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