So it's not a rumour any more? Really interested to see how Nintendo implements the controls and backwards compatibility to the remote+. Handheld to Console communications is something they've been aiming for, it was one of Revolutions features, and very few Wii games use it. So I hope it is more exploited this time.
Backwards compatibility is not really a problem no matter what controller Cafe uses. Just like the Wii supports Gamecube controllers, Cafe can also support Wiimotes for Wii games.
The real question is what motion control Cafe games will use, if any.
My Mario Kart Wii friend code: 2707-1866-0957