Nintendo does not lack new things to show us.
They have Pikmin 4, Star Fox Zero, Zelda U, Animal Crossing amiibo Festival, Mario Tennis, Mario & Luigi Paper Jam, Metroid Prime Federation Force, Pokemon Z, Smash DLC, potential new MK8 DLC, the first mobile game and many other unnanounced Wii U and 3DS games trailers and footage to show us, but they didn't yet. Also, the new rewards system is supposed to come this fall.
You guys have to put in mind that Iwata was still the president when he passad away so they're still trying to figure how to do this new stuff without him, he was the mastermind behind the Directs, it won't be the same without him.
Apparently they already found a way according to rumours and that massive upcoming network maintenance next week, we should just wait.
And I think Wolf will be delayed to coincide with SFZ release, it's the smartest thing to do.