It's kind of odd timing, given they just cancelled a lot of games and the recent track record with new franchises makes me curious just what this is. I'd almost bet it's a familiar franchise. I would love to see an FFXI-2 honestly, although I heavily doubt that's it. Like someone else said, Ivalice is probably a likely target given that it's already a pretty fleshed out universe and has a lot of MMO-ish races and conventions as is.