Following the launch of both the Nexus 4 smartphone and Nexus 10 tablet, Google (GOOG) on Tuesday released its Android 4.2 software developer kit (SDK) to app developers. The SDK includes support for new lock screen widgets, the Daydream interactive screen saver mode, secondary displays, multiple user accounts and more. The latest version of Android also includes gesture typing, AirPlay-like Miracast screen sharing, a quick settings pull-down andÂ a new panorama photo feature called Photo Sphere. Additionally, Android Open Source Project technical lead Jean-Baptiste Queru announced in a Google Groups post that the full Android 4.2 source has been merged into the AOSP code and is now available for custom ROM developers. Unfortunately it would seem that both the Nexus S and Motorola Xoom are no longer being supported by Google and for the time being will remain on Android 4.1.2.