I predict...
-A special mode for Wii U similar to Smash Run for 3DS
-5 newcomers and/or veterans will be revealed
-Release date for 3Ds, and a better time frame for Wii U
-More finale smashes revealed
-More stages revealed
-look at the menus
-look at the modes returning ex.) Classic, All Star, Events
And here is my longshot hopes
-Every veteran series will each get 2 reps
Like the Yoshi, F-Zero, and Wario series will have another rep