Introducing Project Natal, a revolutionary new way to play: no controller required. See a ball? Kick it, hit it, trap it or catch it. If you know how to move your hands, shake your hips or speak you and your friends can jump into the fun -- the only experience needed is life experience - xbox.com
The add-on will offer features such as auto sign-in for players to Xbox Live (based on complex facial recognition), and sports extremely detailed body tracking which will be able to follow the individual movements of separate limbs. During the press event, the company demoed a painting app, which lets you use your entire body to handle virtual painting supplies, allowing you to do things like throw buckets of paint onto a canvas. Another title was shown off which featured a woman interacting with a young boy on the screen -- one of the company's creepier demos in recent memory. Unfortunately for us, Microsoft says the device won't be released during 2009.
For even more info on this, go to
http://www.xbox.com/en-US/live/projectnatal/