Hey everyone,

The App Engine 1.6.5 prerelease SDKs are now available. You can get them
here:

Python:
http://code.google.com/p/googleappengine/downloads/detail?name=google_appengine_1.6.5_prerelease.zip
Java:
http://code.google.com/p/googleappengine/downloads/detail?name=appengine-java-sdk-prerelease-1.6.5.zip

There's a lot of good stuff you've all been asking for in this release.
I've posted the release notes below:

Python - Version 1.6.5
===============================
- You can now perform datastore queries that return a subset of your entity
  properties with the same performance and cost of a keys-only query. This
  feature is experimental.
- In the High Replication Datastore, there is a new metadata kind,
  __entity_group__, that has a numeric __version__ property. This property
is
  guaranteed to increase on every change to the entity group.
- The Images API now supports manipulating objects hosted on Google Cloud
  Storage.
- In the Images API, the get_serving_url call now optionally allows you to
  specify if the URL you are generating should be served over https.
- In the Task Queue REST API, you can now specify a tag when you insert a
task
  on a Pull Queue.
- In the Task Queue API, you can specify a deadline for the lease_tasks
call.
  The default deadline has been increased from 5 seconds to 10 seconds.
- You can now use cron to schedule Datastore backups.
- The Datastore Admin now has a page that displays information on the
status of
  your Datastore backups and restores.
- You can now abort your Datastore backup or restore from the Datastore
Admin.
- In the Admin Console, you can report production issues with your
application
  directly to Google from the application's pages. Simply click the "Report
  Production Issues" link, fill out the requested information, and submit.
- We have added support for concurrent transactions to @db.transactional and
  db.run_in_transaction_options() along with other transaction propagation
  options.
- We've introduced an experimental new Mac Installer that only supports
Python
  2.7.
- In your app.yaml file, you can include an env_variables stanza that will
set
  the given environment variables in your application's runtime.
- Jinja2 now includes the _debugsupport module.
- Fixed an issue with the dev_appserver where it defaulted the HTTP
  Content-Type of a request to text/plain instead of text/html.
- Fixed an issue where the SDK would include some indexes that were not
needed
  in production.
- Fixed an issue in the SDK where the SDK admin console would not display
utf-8
  encoded list property values.
  http://code.google.com/p/googleappengine/issues/detail?id=7079



Java - Version 1.6.5
=============
- You can now perform datastore queries that return a subset of your entity
  properties with the same performance and cost of a keys-only query. This
  feature is experimental.
- In the High Replication Datastore, there is a new metadata kind,
  __entity_group__, that has a numeric __version__ property. This property
is
  guaranteed to increase on every change to the entity group.
- The Images API now supports manipulating objects hosted on Google Cloud
  Storage.
- In the Images API, the getServingUrl() call now optionally allows you to
  specify if the URL you are generating should be served over https.
- In the Task Queue REST API, you can now specify a tag when you insert a
task
  on a Pull Queue.
- In the Task Queue API, you can specify a deadline for the leaseTasks()
call.
  The default deadline has been increased from 5 seconds to 10 seconds.
- You can now use cron to schedule Datastore backups.
- The Datastore Admin now has a page that displays information on the
status of
  your Datastore backups and restores.
- You can now abort your Datastore backup or restore from the Datastore
Admin.
- In the Admin Console, you can report production issues with your
application
  directly to Google from the application's pages. Simply click the "Report
  Production Issues" link, fill out the requested information, and submit.
- As announced in 1.6.4, omitting the <threadsafe> directive from
  appengine-web.xml results in an error.

--
Ikai Lan
Developer Programs Engineer, Google App Engine
plus.ikailan.com

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