Okay, apparently there were also leaks about KHIII and PS4:
http://www.stfuandplay.com/story/content/final-fantasy-versus-and-kingdom-hearts-3-exclusive-to-ps41#.UbaK4HXVBtr
All the leaks about FFXV said it would be exclusive, with some saying it would be co-developed by Sony, and now there's the one above about KHIII.
But if they were exclusive, surely Sony would've been like "THESE GAMES ARE FUCKING EXCLUSIVE", so I dunno what to think.







