I received the 2.2 update at the end of last week and I love it. Everything is better about it, especially now that Hotmail ActiveSync works natively.
The only problems I have are that the weather animations for "clear" and "sunny" show two different sizes of the sun or moon simultaneously while the animation takes place, and that the Music app doesn't remember how far through a playlist you were after restarting the phone.
I've reportrd the first bug to HTC support and I'm waiting for them to get back to me. Does anyone else heve these (minor) issues?