James Gunn’s HBO Max series Peacemakerdebuted in 2022 in the last days of the DC Extended Universe launched by Zack Snyder’s 2013 film Man of Steel, and the show ended its first season with a Justice League cameo to acknowledge its place in the DC shared continuity. But when DC handed Gunn the keys to its cinematic kingdom, having him reboot the DC Universe starting with a new take on Superman, it put a renewed focus on what Gunn’s earlier DC work meant for the franchise’s future.
Everything James Gunn has declared new-DCU canon in Peacemaker

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