From joystiq.com:

That email purportedly sent out by Microsoft a couple weeks back inviting its recipients into a Kinect beta program? Yeah -- it was legit. Joystiq has received corroborating evidence confirming the program, including pictures of the promised Kinect-enabled Dashboard update running on a participant's retail console. In them, you can clearly see the flatter presentation, new mini-guide and revamped Avatar editor -- complete with a re-proportioned Avatar.
Full Story (with lots of pics): joystiq.com