Nintendo announced their new controller yesterday called the Wii U. You can see a video of it here.  It's similar to an IPad for the Wii with a 6.2 inch touch screen.  Also equipped with a camera and video camera that lets you share things to the TV instantly through the Wii.  AND it's compatible with all of the Wii games you already have.  Looks pretty sweet but there's no reviews yet to say if it works as good as it looks.  It's scheduled for release sometime next year.