Will the 3DS be a controller option for the Wii U Smash?

[Numberfox]

Mystro-Sama said:

Oh, that must be why we can use the entire console with the Pro controller alone.

I meant how you can use Wiimotes for games and soon GCN controllers, and how there's usually some handheld controller connectivity like Gameboy to Gamecube and DS to Wii, but okay :)