The App Engine team is psyched to present version 1.2.6 of our SDK for both runtimes, Python and Java. This releases contains plenty of improvements and bugfixes, along with some exciting new features:
Incoming Email - Your App Engine app has been able to send email for some time ... but now, with 1.2.6, your app can also receive email. After enabling mail as an inbound service (just like XMPP), users can email your application at email@example.com. Inbound messages are converted to HTTP requests (again, just like XMPP) which you can receive via webhook handler. Docs for Python, Java.
Delete an App - Our developers have been quite vocal with their desire to delete an App Engine application once it is no longer used (It's one of the top 5 most requested features on our issue tracker). Well, this feature is now available via the Admin Console! Just visit the Application Settings page for more information. Please be careful when deleting an app - the appid can never be reused after deletion. Learn more.
Datastore Stats - You can now see more detailed statistics about how your application data is stored in the Admin Console. This information can also be accessed programmatically. Docs for Python, Java.