The franchise began back in 2012 with two more seasons coming in 2013 and 2015 respectively.
The summer 2017 anime series Senki Zesshou Symphogear AXZ is having its home video release plans handled by King Records and they’ve set a fairly standard plan.
The series was directed by Katsumo Ono, features character designs from Satoru Fujimoto and is animated by Satelight.