ATLUS opened a new teaser website in Japan for the upcoming 25th Anniversary project of the Shin Megami Tensei series.
The series started in 1992 and the SMT mark includes the Persona and the Devil Survivor RPG games.

On the official website at the moment you can find the anniversary logo with the I, II, III, IV and the release dates of the SMT. At the moment not so much more information known about the project so until more info please stay tuned.