James Gunn has said that the second season of Peacemaker is integral to the DCU going forward, and it looks like it builds on the strong first season, judging by the reviews that are landing as we speak.
Following a red carpet premiere in Los Angeles earlier in the week, the reviews are not just overwhelmingly positive, on Rotten Tomatoes it sits at a perfect 100% score.

For context, season 1 scored 93%.
The only concern appears to be that the coven of shrieking harpies liked it, and they are wrong about everything, all the time.
Runor has it that it will really help to have seen Superman, and the release of that movie on digital is timed to mesh with Peacemaker.
So what do the review summary pages have to say?
“Peacemaker season two is the best work of John Cena’s career. He’s always been great in the role of Christopher Smith, but he’s never been asked to do this much, not even in season one”
Michael Walsh, Nerdist
“There’s nothing out there quite like Peacemaker, and season two just shows that there’s so much more to explore with this fantastic cast of characters and simply superb, fascinating storylines.”
Abe Friedtanzer, Awards Buzz
“The testament of a good show is whether or not you care about the characters more than the bigger picture. With Peacemaker season 2, we’re lucky in the sense that both of those aspects are thrilling this time around”
Rachel Leishman, The Mary Sue
“It would have been easy for Gunn to get caught up in the world-building of a new season of live action storytelling in his fresh DC universe to start spinning more ideas out, but this is still the Peacemaker fans fell in love with back in 2022.”
Trent Moore, Paste Magazine
“The gags and gore remain plentiful, but they’re not the dominant takeaways this time. Gunn even finds emotional resonance in the multiverse concept — something Marvel, for all its efforts in that dimension, has so far failed to locate.”
Bob Strauss, The Wrap
“It all works well enough to prove that Gunn is capable of operating within somewhat different tones, even within the same universe. And no matter what the angle, he’s prioritizing comic book fun — a true relief.”
Liz Shannon Miller, Consequence
Peacemaker season 2 arrives on HBO Max in the US, Sky in the UK, and various other channels elsewhere, on August 21st.