Somehow, I think they've got something else up their sleeve. Natal might entice enough people to get some leverage again, but I think they are not done just yet (I'm thinking some sort of re-release of a better 360 (540 sort to say) with discount for current owners, so that better hardware is available, while still being able to play 360 games on it - add some upscale-thingy in there and you're basically halfway into the next generation without alienating your current audience.)