So, almost a week after the release of the “superphone” from Google (the Nexus One), the Android 2.1 SDK is also outed. Now that this official release is finally here, there are new API changes as well as bug fixes, together with a few other goodies.

According to the release notes; this Android 2.1 SDK is only “a minor platform release deployable to Android-powered handsets starting in January 2010.” There are no external libraries on the downloadable platform, which includes a fully compliant Android library and system image.

The downloadable platform also includes a set of emulator skins, sample applications, and more. One of the things many of you are waiting on, is support for active dynamic wallpaper development, the wait is over, but unless you are a developer, this is not for you.