ATLUS today announced that the company working on a new RPG game and it will be announced on December 23, 2016 on a special show in Japan via the Nico Nico at 20:00.
It will be a completely new game not a new Persona, Megaten or Etrian title and ATLUS got the rpg.jp domain for it!

If you visit the website (http://www.rpg.jp) you can find a short letter from Katsura Hashino (the main designer of the Megaten series) and you can find the link for the Nico event.
It is not clear what kind of game it will be but we can’t wait to find it out.

Anyway, save the Nico link and wait for the December 23: http://live.nicovideo.jp/watch/lv284800313