You want to have a look at the Microsoft Keynote @ CES 2011 (Consumer Electronics Show @ Las Vegas, yesterday)
Just click HERE or on the picture here-below.
First reaction from GameSpot
Some specific demo’s.
Kinect for Xbox 360 and Entertainment Presentation
Windows Phone 7 Gaming CES 2011 Presentation
Microsoft CES 2011 Windows OS Announcement
Microsoft Surface CES 2011 Demo