The
Windows 8 Build Blog launched this week and they hint that a beta will be coming soon:
We've been hard at work designing and building Windows 8, and today we want to begin an open dialog with those of you who will be trying out the pre-release version over the coming months.
The Build conference starts September 13th - maybe they will release the beta at the conference?
The early UI demo looks a lot like Windows Phone 7. Not sure if giving up my Start Menu for a bunch of tiles will make me any more productive, but I'll give it a shot.
Previewing ?Windows 8?: Article by Julie Larson-Green, corporate vice president, Windows Experience.