Yoshitaka Amano, most famous for his character artwork in the early Final Fantasy entries, has been busy working on a few projects in recent days, including... Final Fantasy XIII?
According to French publication Japan Vibes, you'd better believe it. He declined any further details beyond the passing mention, but it's worth nothing that Square-Enix had nothing to say concerning any kind of development to this point. There had been previous rumblings that FFXIII would be unveiled at E3, which is right around the corner, although S-E's page detailing its official lineup has pretty much dismissed that notion. Either way, it's comforting to know Amano is at the helm.
[Sources - RPGamer]