It looks like someone has been doing some detective work, as a an online CV (Resume) has been found in which the individual represented, Yuuki Akama, claims to be working on Final Fantasy XIV for PC, PS3 and Xbox 360. She's also apparently working on Final Fantasy Agito XIII and The Third Birthday, both of which will release on the PSP.

Final Fantasy XIV was initially unveiled during Sony's E3 press conference last year, but it was only announced for the PC and PS3. Since then, the director of the game, Hiromichi Tanaka, has stated that talks are ongoing with Microsoft, but that Xbox Live is seen as an issue - presumably they want charge people monthly, but don't want to charge them twice.

Whether it is actually being worked on remains to be seen, and whether the online profile is real also remains to be seen. Don't expect an official word from Square Enix any time soon though.