HTC Leo/HD2 is still going to be the phone for me. Hopefully it comes to AT&T.
I believe its coming to T-Mobile. It'll be GSM so you can unlock it and use it on AT&T. The problem with the HD2, which is superior in just about every way, is that its using stupid ******* Windows Mobile 6.5. That's a deal breaker right there. Rumor is that they're not going to release an Android version either.