1. Yeah, Venom already dumped a WiiU Game,The_Avengers_Battle_for_Earth_PAL_WiiU-VENOM, if ya need the NFO,
2. No, not yet, the WiikeyU had been announced, but it needs some time to get completet, ready, produced etc pp
3. Since you cant play Homebrew in WiiU mode, u can only use Wii mode...