I really doubt that a Mystery Dungeon remake will make it to a home console; it's possible, but I don't recall Game Freak remaking any of the spin-off series'. Who knows though, maybe they'd start with Mystery Dungeon.
There was those WiiWare MD games though, so while I doubt we'd get a MD game on the Wii, it's possible there might be one on the WiiU in the future. The controller is perfect for it, after all. That'd be pretty awesome I'd reckon.