Radiant Historia is a critically acclaimed portable JRPG title that received an expanded 3DS port in the form of Radiant Historia: Perfect Chronology. Perfect Chronology is a port with added gameplay and story content, presentation, and features. In practice, this means redesigned character art, voice-overs, and a new opening animation with a new theme song, among others. A new character named Nemesia is joining the cast in Perfect Chronology, with a third timeline to go along with as well (which is in addition to the original game’s two timelines). To old fans and potential new ones, Perfect Chronology is effectively a ported remake, plus expansion.
See a trailer for Radiant Historia: Perfect Chronology below. Radiant Historia: Perfect Chronology is out sometime next year.