Cupcake has been doing the news rounds for a little while now. What is great news is the official unveiling of Android 1.5 that fully incorporates the Cupcake branch.
Offered through Android 1.5 is a home screen framework for developing widgets. With this, options are available to populate live folders with as much content as you please. Unofficial news is whether 1.5 will come to existing Android handsets in the field.
There is limited information listed in the change log that would prevent current hardware from taking full advantage from the new version. The OHA will be available noting how to prepare application for the release of Android 1.5 on phones.