Maybe, but it doesn't have to be all WOW!
The only good thing about the 3DS for example is not the fact that it's in 3D. It's just a thing on the side for me.
The DS was pretty damn radical when it first came out too (touch screen games, on two screens?), yet its extremely obvious now. It seems like the wii u is headed in the same direction. No need for a big wow, as long as it just makes nicer experiences when playing games, like having two screens and being able to touch one has done for the DS.