Release Notes: Bugs have been fixed and features added.
Release Notes: Support for the bulk loader, enabling uploading and downloading of your data. Java and Python AppServers have been upgraded to GAE 1.4.3. Support for Go App Engine apps (SDK version 1.5.0), including support for apps that use multiple processes. Fault tolerance for almost all services (processes monitored and revived by god). A channel API for Python (multiple receivers can also be used), implemented via Strophe.js. A Blobstore and Files API for Python. An XMPP API for Python, implemented via ejabberd. Namespacing support. Various other bugfixes.