Falcom just announced Sen no Kiseki III (Trails of Cold Steel III in Japan) for 2017.
The Legend of Heroes: Sen no Kiseki I and II are both available on PlayStation 3 and PlayStation Vita. The third entry will be PlayStation 4 exclusive. This will be the first time where new entries in the same series by Falcom will not be available on a system that has previous entries. Unless of course Falcom decides to port Trails of Cold Steel I and II to PS4. Check out our reviews of Trails of Cold Steel I and II on Vita here and here.
The Legend of Heroes: Sen no Kiseki III is set to release in Japan in 2017 for PlayStation 4 only.
Check out the official website here.