Final Fantasy XV launched towards the end of 2016 and since then, Square Enix has kept the game flush with updates and additional content. Last year saw the release of Episode Gladiolus, Episode Prompto, Episode Ignis, and the multiplayer Comrades mode. The FFXV team isn't done though.
The original plan for 2018 saw Final Fantasy XV getting three episodes of further downloadable content (DLC), starting with Episode Ardyn, focused on the game's antagonist. This plan has now grown to include a fourth episode of content, according to an interview game director Hajime Tabata had with Dengeki Online (translated via NovaCrystallis).
This means the DLC for for Final Fantasy XV will be extending into 2019. Fans are still hoping for an Episode Luna and Tabata hinted at such a thing in another recent interview with Famitsu. That leaves two additional episodes and some fans are hoping that Aranea Highwind will take one of those spots.
Tabata said again in a recent interview there might be a FFXV Episode Luna alongside Ardyn and other DLCs. JUST STRAIGHT UP SAY "It's coming" cause you basically telling us so. http://go.redirectingat.com?id=87431X1573192&xs=1&url=https%3A%2F%2Ft.co%2FYimII3xPAH pic.twitter.com/wmtu7cLwru— Miraculous Maku (@RedMakuzawa) February 22, 2018
Final Fantasy XV: Windows Edition will be coming out Steam on March 6, 2018. Final Fantasy XV: Royal Edition for PlayStation 4 and Xbox One will be releasing on the same day.