According to Aibo at Square Enix super fan site Final Fantasy Reunion, the latest issue of V Jump lists the platform for Final Fantasy Versus XIII as both PlayStation 3 and Xbox 360:
The image itself is most likely legit, as I believe it's Aibo himself with the magazine. Of course, it's doubtful that Square Enix would announce a 360 version of one of its biggest games in the information box of a V Jump article, so this is likely a case of V Jump making a little printing error.
Aibo has sent a Tweet off to V Jump asking for clarification.
Update 14:26 -- V Jump has responded to Aibo's inquiry via Twitter. The Xbox 360 listing was indeed a mistake.