Version 1.3.1
=============
  - Datastore Query Cursors
      http://code.google.com/appengine/docs/java/datastore/queriesandindexes.html#Query_Cursors
  - Transactional Tasks
  - Support for Custom Admin Console pages
  - Java Precompilation is now on by default
      Developers can opt-out of precompilation by setting the flag in
      appengine-web.xml:
      <precompilation-enabled>false</precompilation-enabled>
  - New built-in support for unit testing (see appengine-testing.jar)
      http://code.google.com/appengine/docs/java/tools/localunittesting.html
      http://code.google.com/p/googleappengine/issues/detail?id=326
  - net.sf.jsr107 package included as an alternative to the low-level
    Memcache API
  - javax.annotation.Resource/Resources added to the package whitelist
  - New "month" and "synchronized" syntax for Cron configuration
      http://code.google.com/appengine/docs/java/config/cron.html
  - URLFetch supports asynchronous requests
      http://code.google.com/p/googleappengine/issues/detail?id=1899
  - appcfg.sh uses HTTPS for application deployment
  - appcfg.sh adds request_logs --append
  - Changes to the order queries without a specified sort order are returned
    Only queries that use IN will see different results.
  - Added support for multiple != filters on the same property
  - Improved support for keys-only queries when using IN and != filters
  - Support for ETags, If-matches, If-not-matches HTTP Headers, as well as 304
    status codes now available on static files (not yet available on the
    dev_appserver or Blobstore blobs)
      http://code.google.com/p/googleappengine/issues/detail?id=575
  - Fixed issue where the maximum transform count was enforced for composite
    operations
      http://code.google.com/p/googleappengine/issues/detail?id=1656
  - Fixed issue with whitespace on the end of strings in web.xml
      http://code.google.com/p/googleappengine/issues/detail?id=2242
  - Fixed web.xml <error-page> entries for 404 error codes
      http://code.google.com/p/googleappengine/issues/detail?id=1477
  - Added validation prevent welcome-files with absolute paths
      http://code.google.com/p/googleappengine/issues/detail?id=1249
  - Fixed issue where cancelling a deployment in progress could unintentionally
    corrupt the SDK
      http://code.google.com/p/googleappengine/issues/detail?id=2255
  - Fixed issue with QuotaService.getCpuTimeInMegaCycles() returning 0
      http://code.google.com/p/googleappengine/issues/detail?id=2639
  - Fixed issue where JSP exceptions will be incorrectly cast causing a 
    ClassCastException
      http://code.google.com/p/googleappengine/issues/detail?id=1438

Version 1.3.0
=============
  - Support for the new Blobstore API
  - New com.google.appengine.runtime.{version,environment} system properties
    (and a SystemProperty accessor class)
  - New sample applications for GWT 2.0
  - Optimizations for many reflection operations

Version 1.2.8
=============
  - Support for JAXB. JAXB is included in JDK 1.6 (and App Engine's production
    servers). If you're using JDK 1.5 with your local dev_appserver, you will
    need to include the JAXB libraries with your application to use it.
      http://code.google.com/p/googleappengine/issues/detail?id=1267
  - New support for application pre-compilation to reduce the length of
    loading requests. To enable pre-compilation on your application, add this
    flag to your appengine-web.xml:
      <precompilation-enabled>true</precompilation-enabled>
    If you have trouble deploying your application, you should remove this
    flag or set it to false.
  - Added Quota API (com.google.appengine.api.quota) to match Python API.
  - Low-level Memcache API now supports batchIncrement().
  - HTTPResponse object now has getFinalUrl() method for 302 redirects.
    - http://code.google.com/p/googleappengine/issues/detail?id=1464
  - Java Dev Appserver now automatically executes tasks.  If you prefer the
    old behavior where tasks do not automatically execute you can use the
    following flag when starting the server:
      -Dtask_queue.disable_auto_task_execution 
  - Additional file extensions permitted when sending mail.
    - http://code.google.com/p/googleappengine/issues/detail?id=494
  - Fixed issue with Java mail handler not processing multipart messages
    correctly.
  - Fixed agent code included in appengine-local-runtime.jar results in
    RuntimeException.
    - http://code.google.com/p/googleappengine/issues/detail?id=2280
  - Fixed issue with sort orders defined on properties that allow multiple
    values.
    - http://code.google.com/p/googleappengine/issues/detail?id=2349
  - Fixed problem with dropped query strings after requiring log-in.
    - http://code.google.com/p/googleappengine/issues/detail?id=2225
  - Removed limitation preventing multiple parameters with the same name.
    - http://code.google.com/p/googleappengine/issues/detail?id=2090
  - Fixed issue with local datastore incorrectly sorting results of ancestor
    queries.
    - http://code.google.com/p/googleappengine/issues/detail?id=2177
  - New Index building status page in the Admin Console
  - Task Queue now supports purging queues, and deleting tasks and queues via
    the Admin Console.
    - http://code.google.com/p/googleappengine/issues/detail?id=2159
    - http://code.google.com/p/googleappengine/issues/detail?id=1740
  - Over Quota HTTP status code changed from 403 to 503, other to 500.
    - http://code.google.com/p/googleappengine/issues/detail?id=961
  - Task Queue now considers all HTTP 2xx status codes to represent success.

For past release notes, visit:
http://code.google.com/p/googleappengine/wiki/SdkForJavaReleaseNotes