We've known that Cupcake has been floating around in dev circles for months now, but it's been clear as mud how the Open Handset Alliance plans to incorporate all of the lovely features it brings into Android's trunk, how Android will be versioned going forward, and in general, how the group plans to present a unified front to developers, manufacturers, and end users. That all gets a little clearer today with the official unveiling of Android 1.5 that fully incorporates the Cupcake branch, and -- perhaps much more importantly -- a home screen framework for developing widgets and populating live folders with whatever content you can dream up. There's no word on exactly how 1.5 will come to existing Android