First up, a new smart phone app, The IDOLM@STER SideM LIVE ON ST@GE was announced! There are no details on what the app is yet though.
Yamamura Ken, the office staff for 315 Pro also got voiced by none other than Kawanishi Kengo. The game is also currently doing a 1 million download campaign, and you can get presents by logging in! The deadline is on 18 February 2017 at 23:59 JST, so do get to it quickly!