Season 2 Is Being Written, Says James Gunn
https://collider.com/peacemaker-season-2-writing-james-gunn/
The second season of Peacemaker has been in development for a long time, but a couple of recent events have delayed its production. Earlier this year, Gunn and Peter Safran were hired by Warner Bros. to structure the future of DC Comics in both film and television. The task of supervising an entire franchise evidently would take Gunn away from working on Peacemaker, with the director stating that the making of Superman: Legacy would be his priority, for the moment. It remains to be seen when the new episodes of Peacemaker can begin filming.