On September 8th, 2015, Koizumi Daisy announced a new series in the popular Love Live universe, dubbed Love Live! Mirai! Information was posted, along with a poll for people to give their initial impression.
On May 31st of 2016, Daisy opened two different polls: one for name submissions and another for characters. After this, she announced the official releases for the anime and novels: The novels would be released monthly starting on January 1st, 2017, and the anime would begin air on June 25th, 2017, following the plot of the novels to some extent.
Please see Love Live! Mirai! / Characters for more.
Love Live! Mirai! / Novels
The Love Live! Mirai! novels revolve around the major storyline of the series, along with additional character development compared to other media. The first novel is revealed to come out January 1st, 2017.
Love Live! Mirai! / Anime
The Love Live! Mirai! anime is an upcoming project directed by Koizumi Daisy herself. It is unknown how many seasons or episodes there will be. It would unofficially start airing on June 25th, 2017.