The new Sapphire 2.0.0 ROM is now available for the Droid, Droid 2, Droid X, Droid Incredible, and soon the HTC EVO. Since the previous release 3 months ago there have been a variety of improvements in term of stability and battery life as well as a few new features.
Sapphire is completely built from Android 2.2.1 (Froyo) AOSP source, with minor additions.
You can download Sapphire here.