There are still a few Wii games slated for release. I assume most of the collectors here already know about Rodea and have it preordered. The Wii Rodea is one of my most anticipated games this "holiday season". The newest Skylanders game is racing themed, and Beenox is developing a "unique" version for Wii / 3DS. Beenox made good ports of Spiderman Shattered Dimensions and Edge of Time for Wii, and ported Swap Force to it. They have the ability to make a technically solid game for Wii and I might be picking that up.
There is also a Disney Channel themed Just Dance game plus two more licensed kids games from Little Orbit. I've played a couple games from them and they were painful.
Are there any other games left on tap for Wii? What are you expecting to add to your collection, if anything?