During the recent My Adventures With Superman panel at SDCC, showrunners Jake Wyatt and Brendan Clogher confirmed that the Adult Swim series has not been renewed for a season four.
While it is possible that a renewal might still arrive before the third season’s end, or quickly following the finale, nothing has been confirmed. Both Wyatt and Clogher reiterated that, thanks to falling under the umbrella of the DC Universe, the decision as to whether Adult Swim’s Man of Steel will return is in James Gunn’s court.