OK this might be a stretch but it might not. Here's a page
for one of the core developers of Project Natal
. In his update he writes,
June 1, 2009: I can finally disclose that I'm one of the core developers of the human-tracking algorithms for Project Natal
(click for more info), bringing full-body motion control to the Xbox 360+.
Is there going to be a new SKU called the Xbox 360+ ? It might be a while before we do know but hey, it's sometimes fun to speculate.