Emily Rogers: New IP coming to NX described as weird, fun and crazy. And New 3D Mario.

[Wyrdness]

Miyamotoo said:

Yes, "creation kit where you share your creation with others" of Mario 2D platform game, so not new IP.

No it is a new IP because the platforming element is not the focal point of the whole game, the creation and sharing element is so again that's silly logic.