The earlier seasons of Symphogear are directed by Tatsufumi Itō and Katsumi Ono and feature animation by Satelight.
The official website and Twitter feed (@SYMPHOGEAR) for Symphogear, an original TV anime that blends sci fi action and idol singing, have announced that a 5th season of the series will begin broadcasting on Japanese TV in April of 2019.
Crunchyroll currently streams seasons 1 – 3 of Symphogear.