As has been said, rumors are all over the place and, in the end, they're just that, rumors. Hell, I remember reading "insider" rumors that the Wii would have 3-core processor and be similar to the 360. Historically speaking, MS has had the most or close to the most powerful console on the market (in real world situations, the only meaningful advantage the PS3 holds over the 360 is in disk capacity). They could pull a Wii and favor innovation (read: kinect) over raw power, but it goes against MS's standing console MO (outspend rivals to force them out of the market). Sony's dick-waving contest with MS and their love of being perceived as cutting-edge ensures that they will do all they can to match or exceed MS's next console. Until their official unveiling, we really have no clue as to what MS and Sony will bring next gen.