Google has announced that the full Android 4.1 Jelly Bean SDK is now available to download for developers, and it comes with the new Jelly Bean APIs for developers to get their existing apps ready and also develop new applications for Jelly Bean.
We are pleased to announce that the full SDK for Android 4.1 is now available to developers and can be downloaded through your SDK Manager. You can now develop and publish applications against API level 16 using new Jelly Bean APIs. We are also releasing SDK Tools revision 20.0.1 and NDK revision 8b containing bug fixes only.
You can find out full details on the Android 4.1 Jelly Bean SDK over at the Android Developers Blog.