The thing about the lineup is that with a few notable exceptions, all of the games have been announced, or said they were in the works:

Wii U - Smash Bros U, X, Bayonetta 2, Hyrule Warriors are all known titles that are coming out. Nintendo apparently said that they were working on Zelda U, Pokken and fatal frame.

3DS - Smash Bros, Pokemon and Tomodachi Life are all known titles. Yokai Watch, and Dragon Quest VII are out in Japan (I'm sure) but haven't been localised.

A new Miyamoto/Retro Studios/Mario Party games just make sense for Nintendo to be working on, although we are sketchy on the details there. A Metroid 3DS game and a new Star Fox game though, that's the big new items from this list. Those are the two more unknown items on this list.