here's a link from planet gamecube with info regarding New super mario bros and the following quote
http://www.planetgamecube.com/newsArt.cfm?artid=11202
and the quote from the article by Miyamoto himself
“I would say that we are progressing well with completing it," says Miyamoto. “And one of the most important features is that, because Revolution can run GameCube software, when you play Twilight Princess on Revolution you can take advantage of the Revolution controller."
Awesome Stuff!
THE JACKEL