My theory indicates that the FFXII team are making FFXV and it will be out in 2014.

[Galvanizer]

I should also add to my above post that that tweet by Matsuno was made on April 22, 2011 and Matsuno had an interview with 4Gamer in the Square Enix HQ a few days later.

So whatever project he is working on, it's likely with Square Enix.