There will be a Final Fantasy 13 on Wii

[CAL4M1TY]

It'd seem likely (to me) that they'd release a XIII spin off, but not the core game (FFXIII). S-E seems to be doing that alot lately.

Compilation of Final Fantasy 7
Ivalice Alliance
Fabula Novala Crystallis

I wouldn't expect any news about it until FF13 has a locked down release date though.