Hiroyuki Ito (Director FF6, FF9 and FF12) hints that he's working on FF15 in recent interview

[A203D]

I asked him as best I could using translation software. (I am planning to learn Japanese, however its not easy at the moment).

I'm not sure he will respond Galvaniser. But if he does I will let you know! Another good person to ask might be Yochi Wada himself... I imagine he is on Twitter.