It looks like the new characters can transfer to the Wii U version if you own both games. I wonder if the game will feature cross-saving? That would be awesome, as I still have a ton to do in the Wii U game.
Hot damn, if that's how smooth it actually runs on the new 3DS I'm amazed. It didn't look like it was running at much slower than the wii U version, if at all. I wonder what magic/cutbacks they had to make to get it to work?
Edit: Also, surely this has to be new 3DS only? Or is the regular 3DS version going to run at 3fps?