I think Nintendo's "pitch" to core players will be the following 8 projects, probably all well into development by now:
Super Mario Universe - EAD Tokyo Fall 2013 (?)
Zelda U - EAD (Aonuma's group) 2014
Super Smash Brothers U - Nintendo/Nacmo Spring 2014?
Bayonetta 2 - Platinum Games; Late 2013/Early 2014
Retro's Game (New IP?) - Retro Studios; 2013
Monolith RPG (New IP) - Monolith; Summer 2013
Donkey Kong Country U - NST (?); 2014?
Mario Kart U - EAD; Fall 2013
These are going to be the "tentpole" core games for the Wii U through the end of 2014 I think.