the wii doesn't have the hardware capabilities to run the 2.0 toy box, heck it couldn't even run the 1.0 toy box properly. so unfortunately there is no form of 2.0 for wii.
So they have not said is 1.0 will be available on ps4 or xbox one? would be a good idea for new users who never got 1.0 to release the game on the new platforms.