guys, check out this amazing video of an HD2 running WP7 from NAND, it looks fast and sleek and everything seems to be working.
It came from XDA China, not much is known yet, but if they got it working this well already, a release soon could happen for us!
YouTube - HTC HD2 BOOTING WP7 WINDOWS PHONE 7 (XDA-CHINA) video2
I first saw it from this thread.
HTC HD2 Windows Phone 7 WP7 fully loaded? - xda-developers