The official website of The IDOLM@STER: Cinderella Girls anime adaptation has revealed that the second season of the anime will be airing from July 17th at midnight JST (effectively the 18th) during the Summer 2015 anime season. The announcement was made after the first season’s final episode aired.
Here is the first commercial that was released at 30 seconds long:
And the second, a 15 second CM:
More at: Haruhichan Network