Apparently Pikmin 3 has been announced to shift to the WiiU. On one hand I'm thinking that it would be fantastic given the console's interface, but on the other I'm thinking the whole Pikmin 3 saga is becoming like the boy who cried wolf...
If you want to blame anyone, it would be Miyamoto. He'd cancel a completed game if he sees a better fit platform and rebuild it there.
That said, expect to see Pikmin3 to make use of the tablet.