Siliconera was able to chat with producer Ichiro Hazama regarding the history of Theatrhythm Final Fantasy , and it’s potential fate. Among some particularly neat tidbits (such as FFXIII-Versus DLC, when the game doesn’t even have a date yet), Hazama explains that since FFXIV is undergoing a major content update, music from it shouldn’t be included yet.
He also very proudly re-iterates that the game sold out in Japan, and hopes that it will be a staple Square-Enix franchise going forward. Dragon Quest, Kingdom Hearts, and Tomb Raider (!) are a few examples he cites as possible contiunations of the series.