Aside from the listed added features, I've noticed 2 bugs that were fixed:
1. Voice search. Previously when I would do a voice search, it would only search Google and would not search contacts. Now searching by voice will first bring up contacts that match, followed by Google results.
2. Landscape mode on home screen. The only time the home screen would switch over to landscape mode was while in the car dock. Now it switches over any time the Droid is turned on its side.