Over at the Official Google Mac blog they've announced the release of App Engine Launcher for Mac OS X.

Google releases the Google App Engine Launcher for Windows, a graphical user interface for creating, running and deploying App Engine applications when developing on Windows.

Innovation continues to happen at a crisp pace since Google launched its App Engine in April. Yesterday, a programmer for the company, which has been dinged for accepting applications only coded ...

Google says the new logo and the app launcher/nav bar change will be rolling out over the next couple weeks on most Google products.

Google's App Engine hosted development environment now lets applications exchange instant messages with networks based on the XMPP open standard.