With the release of the Google App Engine (GAE) SDK 1.5.2, Google has added support for its own internally developed programming language, Go. The SDK includes a Go runtime, a Python development server with a sandbox for developing and testing Go applications and a build service. For now, Go GAE support is only available on Linux and OS X, because Go has not yet been ported to Windows. Also, the current SDK release does not support parallel execution.
Developers are cautioned to treat the current GAE Go environment as experimental only and not to use it for commercial projects.