Umm that last sentence there... the original PS3 remote already had motion sensing it. They never utilized it that much. I think the Downloadable ps3 bowling game used it, as did other games, but in arcade moment segments.
I think this will hurt Nintendo in the next gen. Nintendo's big thing was the motion controller. The Wii itself has the technology of a last gen console, so the only thing that made it interesting was the controller.
I think Nintendo will have a hard time moving the Wii 2, if they go the old tech route again, since Microsoft/Sony will be using motion tech from now on, with better consoles.