Natal is Xbox 720 (Forward Compatibility and the future of the XBOX brand)

[brythoma]

I think both the 360 and PS3 will last till 2015 or longer.  I used to think that microsoft would release the 360's successor in 2012, but after introducing Natal, I think they could probably push back a few years till 2013 or even 2014 (depending on the market conditions).