Bit, apparently there is one bit of info that I hadn't heard yet. Supposedly Nintendo has plans to release a sort of "shell" for the remote-styled controller, that you would use to play more "traditional" games with. There's an interesting mock-up here. Uh oh, that sort of reminds me of the controller for a certain other Sega system...

I'm liking it more and more.

Here is the promo video for the controller. I hope I didn't give the impression that it was a demo. It's just conceptual, basically. At the moment, I believe the only demonstrations they had were extremely limited.
Here is the complete, translated keynote speech by Satoru Iwata, complete with English slides. That was released the day after the event. I watched the whole thing, and it really explains Nintendo's whole strategy these days.