A Japanese release has finally been set for August 4th, 2011, with Nintendo taking over publishing duties, something they have done with other Western-developed Wii games, with the subtitle of Mickey and the Magic Brush and some fixes to the camera issues.
To elaborate further, the change from the Scrapper/Hero system to Guardian system was made because then you'd have to worry less about people just trying to play the meter and instead make their own choices.
Word Of God is that the leaked concept art was made of ideas rejected because they were too edgy for Spector.
An Alice in Wonderland level based on Alice's Curious Labyrinth from Disneyland Paris was planned but scrapped to avoid confusion with the Tim Burton film. It can still be seen in Yen Sid's model of the Wasteland.
When Mickey spills the thinner into the Wasteland, one can see the Labyrinth model sinking away into nothingness, further explaining why it never appears in the game.
Several concept art shows that Minnie was originally going to be in the game.
Another storyboard shows Ursula◊ as a villain in the story. According to the Art Book, Ursula would have lived inside The Jug, originally written as a separate location from Mickeyjunk Mountain attached to various machinery filtering out the thinner in the environment.
Potential bosses for Mickeyjunk Mountain included Chernabog and a robotic Yeti exo-suit of Oswald's.
A larger example comes from the decision why the game is a Wii exclusive. It was originally a XBOX 360/PS3 game, but when he was asked about a Wii version, Warren Spector decided he didn't want to it to make it a bogged-down port. So, they decided to make it a Wii exclusive...(It should also be noted that he's also a big Nintendo fan.)