Comrade Nelson has
posted word that the fall dashboard update for this year is now being rolled out to users worldwide. The update adds in the new ESPN features (if your internet provider supports it), some enhanced UI features to Netflix and the Zune, Marketplace, and support for the Kinect device which rolls out this Thursday.
The release is being staggered so you may not get it immediately and you do not increase your chances of getting the update by simply logging on and off the service.