Just learned a little bit more about the game from Joystiq:
"The game reportedly revolves around forgotten Disney characters who, after years of being ignored, have grown bitter. None more so than Walt's first cartoon creation, Oswald the Rabbit. He's the one who spread all of the evil black goo around that you see above. Mickey will apparently have to use paint, thinner and erasers to draw his way through the world, which makes the Wii exclusivity a lot easier to understand."
Wow, this game is sounding better and better all the time. Forgotten Disney characters? Can't wait to see who else makes an appearance.