According to post from Twitter account of French animator Thomas Romain, it was announced that second season of sci-fi/action anime series Senki Zesshou Symphogear is already on the works.
Series was also announced to air next year. Thomas Romain is the key animator and art director of Basquash!
Here is the tweet:
Ok guys. The big news was that we just started to work on a new season of symphogear that will air next year!
— Thomas Romain (@Thomasintokyo) October 6, 2012
via MyAnimeList News