Horribly disappointed at this being Retro's "big secret new project." It looks like more of the same with only minor changes/additions, and Nintendo is really lacking in variety right now. So many 2D platformers coming up: New Super Luigi U, Yoshi's New Island, Yarn Yoshi, Mario 3D World (it's basically a 2D platformer with some 3D elements)...I really think they could have had Retro doing something other than a new DKC game to add to that list. :/
Don't get me wrong, I'm sure it'll be a good game, but I was really hoping for a new IP (or revival of an old IP), or at least another Metroid game from Retro.