We're at a Q&A session at E3 with Nintendo's wizard Shigeru Miyamoto.
Asked about Sony and Microsoft's motion controls revealed earlier this week, through a translator he said that Nintendo's policy is to actually do development and figure out how the hardware is going to be used with software before making an announcement.
Oooo smack talk. But he admitted it took them a while to finish Wii MotionPlus. He also said that until it reaches that level of completion it's impossible to make any sort of judgment about them.
Talking about the vitality sensor, he said it's a device he's interested in because it's a different kind of interface, versus something you do with your own will—you step on to a Balance Board, but can you control your own pulse? He's thinking of something like that, that's hard to control, controlling it through something like yoga.