Development on Final Fantasy 15 will continue after the PC launch
http://www.pcgamer.com/development-on-final-fantasy-15-will-continue-after-the-pc-launch/
Final Fantasy 15: Sexy Boy Road Trip won’t be launching on PC until next year, but Square Enix won’t be leaving us high and dry when we finally get our mitts on it. Game director Hajime Tabata revealed that development would continue on the game over the next year.
Episode Ignis, the next piece of DLC, was planned to be the final piece of content for Final Fantasy 15, but the fan response has inspired the studio to continue developing DLC.