...in addition to built-in Natal tech, a key feature of the next Xbox would be full HD stereoscopic 3D visuals similar to 3D movie theatres.
And that's everything they said on the matter.
So while the Xbox 360 would be getting Natal, the Xbox 720 (or whatever you want to call it) could have Natal and 3D immersion. TeamXbox claims that the 720 won't be launched until 3D television solutions go more mainstream, which by my guesstimation won't happen within four years.
Still, with Hollywood's focus on 3D, it's not hard to believe that Microsoft would design their home entertainment console to match—even if the risk would be huge.