The producers of the aforementioned Android controllers will rely on developers using their free softwaredevelopment kits to include controller support for their games.
Super Mario is on His Way: The Nintendo EAD Tokyo SoftwareDevelopment team that created the Super Mario Galaxy games for Wii and Super Mario 3D Land for Nintendo 3DS is working on a new 3D Mario action game for Wii U. The game is scheduled to be playable at this year's E3.
Before I get into detail, allow me a short disclaimer: The hardware I played with was a prototype, not a finished production model, and the games I played with were essentially proof of concept demos, not necessarily software under development.