- still no word on online play
- difference game mechanics and modes for Wii, DS versions
- Wii confirmed events: Speed-skating, downhill skiing
- DS confirmed events: snowboarding, bobsled
- both versions of the game will share a ton of events between them
- confirmed characters thus far: Mario, Sonic, Luigi, Shadow, Bowser, Daisy, Blaze, Yoshi, Waluigi, Wario, Tails, Peach, Eggman, Knuckles

Thanks again to ibbsters for the heads up!