Leave it to Nintendo, and the Metroid series, to invent a new nd-person-view for a video game.
It appears, according to interviews, footage, and demo players' testimony, that the game functions as a hybrid between 2d sidescrolling Metroid goodness, and 3d 3rd/1st person gaming.
I'm sure it'll be fun, but it makes me wonder: Did they do this on purpose so they could mess with people when others want to classify what type of game it is? (similar to how Metroid Prime is a First Person Adventure).
Whatever floats their boat, I guess.