UPDATE: Square Enix has been in touch to provide a statement, and to assert that, contrary to a part of our report, that Luminous Productions will remain its own division.
"Hajime Tabata resigned from his role as the director of Final Fantasy 15, at the same time he left Luminous Productions and has no further relations with Square Enix or Luminous Productions," it reads. "We are told that he left for personal reasons. It is with regret to see the departure of such a talented member of staff who applied themselves on Final Fantasy 15 and many other memorable titles. We wish him every success for the future and will continue to cheer him on."
"As to the future of Luminous Productions, the studio was established with the goal to create a new IP, so we are continuing to develop our new title."