Rumors have been circulating around that there will be a new 3D Mario platformer on the Wii U as early as October.
The 3D Mario game itself is confirmed, along with Mario Kart and a Zelda game, among others, the date, however, is a rumor.
When it does come out, though, it better not be like Super Mario 3D Land. That game was crap, it was boring and there was no exploration. I could go for a Mario 64-esque game. Or a Sunshine sequel, like how Luigi's Mansion got a sequel. Heck, even Super Mario Galaxy 3 would be awesome, although I liked the more serious atmosphere of the first game more than the cartoony one of the second.