At the end of the 26th of Little Busters! (リトルバスターズ!) a preview of Little Busters! ~Refrain~ was shown. Earlier many rumors about a second season of the series was being spread and it now turns out to be true. Refrain is a scenario that is unlocked in the Little Busters visual novel when all the 6 herione scenarios are completed. No exact date or details were given as to when Little Busters! ~Refrain~ will be aired. The official twitter account for the show has asked the fans to wait a little longer for details. The official website is now streaming the teaser as well but without any details as well. But the best chaces of this anime being aired is between this year’s Fall or Winter lineup.
Little Busters (リトルバスターズ!) aired from October 6, 2012 to April 6, 2013. An OVA will be airing on August 28, 2013. I’ve played the game and thoroughly enjoyed it, even though a never got to unlock refrain. Till then guys stay tuned for more updates.