This special edition Red Wii was spotted on the Nintendo Japan site, it’s in celebration of the 25th anniversary of the original Super Mario Brothers game.
Details are sketchy of course, but if you read Japanese there may be some more information here for you. What we do know is that it will have a Wii MotionPlus controller, Donkey Kong, and the original Super Mario Brothers. Since I don’t read Japanese, it’s tough to tell, but it looks like the Wii will be coming out on November 11th. It’d be great to see this in the US, but probably unlikely.