When was a WiiU version ever announced? New Super Mario Bros. Mii isn't an official game for the WiiU. Although I'm still unsure about this Super Mario 4 business. Maybe that'll be the Mario game for WiiU.
Pretty exciting, I hope there are more old and new power ups than in Super Mario 3D Land though. I hope they also change the NSMB music... I prefer classic Mario music to the NSMB sound tracks. Although... WHY IS IT NEW SUPER MARIO BROS. 2???