I just got my Droid 3 on Monday, after a bit more than a month with my Droid 2 Global.
I think I have figured out most of it, except for 2 things.
First off, i really like the Quick contacts widget in 2.3, but some contacts aren't showing up properly. For example, i have my dad listed as a favorite, but if i tap on his icon to call him, it brings up the Contact entry for my coworker (and i have already checked to be sure that they didn't accidentally become merged)
Second, I have imported my facebook contacts to my address book. All of the imported phone numbers appear in the format +1-xxx-xxx-xxxx. NBD, but if i try to actually call one of these 1-prefixed numbers, the call fails ("the call can not be completed as dialed, please check the number and try your call again").
Any idea of how to fix these issues (or at least a decent workaround that doesn't' sacrifice too much functionality)