According to the official website, an anime series of "Love Live!" School Idol Project" was announced to be released in 2013.
Love Live official website
Nine characters of Love Live
Love Live! is a joint project of Sunrise, Lantis, and Dengeki G's magazine launched in 2010. Seven single CDs and three album CDs of the idol unit have been released.
Otonokizaka High School has been in danger of closure due to the decrease of the new students. Nine high school girls come up with an idea to save their school: they become idols and invite students by promoting the school.
Source: Love Live News
Love Live! School Idol Project