etoychest has an interesting interview with Nintendos Vice President of Marketing and Corporate Affairs, Perrin Kaplan, regarding the controller. Even if it doesn't have a wealth of new information, it's worth checking out:
Q: Do you know off hand how, using the new controller, the Revolutions Super Smash Bros. will work?
PK: Off hand, even if I did, I would rather just let players use their imaginations to think about how it could be played. The controller opens up a number of possibilities to control a game like Super Smash Bros. I know people want to know more, but now isnt the time. There really are just so many ways this controller could be used, and I think itd be just more fun to see how players might imagine a game like that be controlled.