Bandai Namco announced the release of the next IMAS game which will be available on iOS and Android from 2017 in Japan the The Idolmaster: Million Live! Theater Days.
The game will be based on the Million Live series and with the announcement the first promotion video already released.

At the moment not so much more information known about the game but we can be sure in many way it will be the same IMAS smartphone game as the CG or the other music IMAS games. Bandai Namco going to release more information in the near future so until that, stay tuned!