I think that if Sony had just left the OtherOS option in the new consoles, and not removed the support from older ones and maybe improved it by allowing access to the GPU, then this would have taken a lot lot longer since there was no motivation for the hardcore guys
Edit: I also wouldn't be surprised if these motion control addons are research for the next console generation. I've heard of people thinking of Kinect as the next generation of XBox somewhat, and it does kind of make some sense. I don't think we'll reach a stage where motion controls are integral to most games, because even in this generation with the SixAxis on the PS3, most all of the uses of it were one of gimmicks (Mirror's Edge: Use the SixAxis to balance, or just use a control stick. Uncharted: Use the SixAxis to adjust grenade arc...or again, just use a control stick. Ratchet and Clank: Use the SixAxis for two minigames).
If you mean there's no rumor of the next generation arriving soon, that's true enough. Sony in particular have always stuck to the position that the Playstation 3 is meant to last for roughly a decade, which is why they said they weren't too worried by the fact that nobody wanted a PS3 when the system first came out. We're around the five-year mark now.