I bet he's just gonna smush all his games together, you know like incorporate all the best elements of Pikmin, Mario, LoZ, DK, ect. into one super game.
I thought I already commented on this topic... Maybe it was a different forum...
Either way, I heard about a year or so ago that Shigeru Miyamoto felt the urge to create a new Nintendo character or a new game, in a similar vain to how he created Pikmin.
I like that, I love to see what kind of games Nintendo comes up with! Especially from "the Leonardo da Vinci of Video Games" himself.