Some more pictures has come out that you might be interested in, as well as an interview about the game. The first link shows one of the foes that you will meet, who is fighting against... Mickey?? I thought that's who we were supposed to take down?
The second link talks more about the game itself, saying that you will be playing mickey, but the way you play the game and how you beat the levels will determine his appearance towards the end of the game.
This link is a 5 page article on the game from gaming magizine and website Game Informer, and the kinds of mickeys you could end up with show on page 4, showing an almost purely black and white mickey while wearing dark toned colors of his shoes and shorts, hunched over like Gollum. The second mickey is glossed head to toe with a yellow shine where his whites are, still slightly haunched over. The third mickey is the current mickey that we see today, with gold colored gloves and vibrant colors. They also each have different colors on the painbrush they use.
Looking at the photos, I'm guessing that the game will have 3-D backgrounds and levels with 2-D platforming (See: Klona on Playstation)
So far it's looking really interesting, but there's still question on wether or not it's a DL title or a disk/console title (It will probably be DL, I'm guessing), and I'd like a bit more clarification on the story.