As you read it, the pledge levels only include PC/Mac/Linux DRM-free versions.
We are also working on tablet versions for iOS and Android (sorry, no plans for smartphones). And who knows, there is also the possibility to get it on Ouya, Playstation and Xbox.
Wii U? Nintendo doesn't allow us, Brazilians, to add content to their indie store. So, we can't promise you anything on Wii U.
We are also looking into getting it on Steam. If that works well, all backers who get the digital copy of the game or above may get a Steam code of the game if they wish so.
Sorry, no Zeebo, SNES, PSVita, 3DS... :(