The development time for the Wii U version would probably take longer since they would have to develop the separate UI and stream code tech to handle it.
The PS3/PS4/PSVita is pretty much a straight port of the portable/console versions.
Even the 3DS version would be extra development time compared to the PSVita version.
Give it another 6-12 months before the Wii U/3DS versions come out.
BTW no way should there be a map on the gamepad, get real.