Amazon lists LittleBigPlanet Game of the Year Edition

If you have yet to get your hands on Media Molecule's super-adorable platformer toolkit LittleBigPlanet, you may want to go ahead and wait a while. According to IGN, Amazon put up a listing for the rumored "Game of the Year" version of the game, which not only costs $49.99, $10 less than the list price of the original, but also includes extra content.

Though the Amazon listing has been removed, IGN has decent proof of its existence: a box art image (see it in full after the break), which promises "Bonus content valued at $30!" What content is it? Who valued it at $30? Is it some portion of the existing costume and level DLC? Will free or user-created DLC be included? And, most importantly, when is this thing coming out? Since all we have is a report about a nonexistent retail listing, the amount of detail we know is pretty little.