This is the "Project Natal" Microsoft presented in a video provided by the E3 2009. Soon no more joysticks to play with the Xbox 360., nothing, except you and your friends. But this is the crux:
Watch the video . Impressive!
Natal After Non-Gamers
Peripheral's launch will rival that of the Xbox 360.
by Martin Robinson, IGN UK

UK, June 12, 2009 - Project Natal will not be pursuing existing or lapsed gamers, and instead will be looking to attract people who have never played a game before in their life.

Microsoft's Shane Kim made some typically bold claims about the potential of the Xbox 360's motion sensing technology, telling Kotaku "We're not focused on this generation's casual gamers or even PS2 people who haven't upgraded. This is about the 60% of households where a video game console doesn't exist… the problem is that the controller is a barrier for some people and now with Project Natal we completely eliminate that."

Kim went on to state that so fundamental are the changes wrought by Project Natal that it's launch will have the same magnitude as the release of an all-new console.

"Conceptually, the launch of Natal will be like the launch of Xbox 360," said Kim, "It's going to be that big. We're not just going to ship it when the hardware and software are ready. We have to make sure that there are enough content experiences that are really good. That's similar to how you would think of the launch of a new console."