While it may have been known that there was a Paper Mario title in development for the 3DS, no one actually knew when they should be expecting this interesting title. Well, that release window was just narrowed down until next year at some time for Japan at least, as during a Pre-Tokyo Game Show held specifically for Nintendo 3DS games they announced the 2012 release of the game.
Along with a little bit of gameplay footage not much else was revealed for the title. Though it does appear to follow the first Paper Mario on the Gamecube title closer than the sequel which was released a couple of years ago on the Wii. Which would you prefer?