Nice quick walkthrough by Greg and Evelyn.
The little I’ve played around with Windows Phone 7, I think it definitely has potential. Whether that means anything, of course, remains to be seen.
I like that it’s not just a straight up copy of the iPhone in terms of interface. I think that really hurts Android. Android, even after all its improvements, is still nowhere near iOS in terms of about a billion little interface things. And because their basic frames are the same, the shortcomings are apparent to anyone who uses both.
WP7 is going in another direction. It might fail, but at least they’re being original and trying new things. Things that we may see iPhone and Android copy.