James Gunn Is Already Writing His Next Film Ahead of ‘Superman: Man of Tomorrow’

Los Angeles — James Gunn is already moving on to his next film as work continues on “Superman: Man of Tomorrow,” which is scheduled to hit theaters July 9, 2027.

Gunn revealed on Threads that he has begun writing his next movie. He made the admission in response to a fan who asked whether he was ready to start working on another film.

“Already in it. I had to do something while I was waiting for the assembly!” Gunn replied.

The filmmaker also confirmed that the assembly cut of “Superman: Man of Tomorrow” has been completed. Gunn previously announced in August that production on the superhero sequel had wrapped.

“Superman: Man of Tomorrow” follows 2025’s “Superman,” with David Corenswet returning as the Man of Steel. The story will see Superman join forces with his enemy Lex Luthor, played by Nicholas Hoult, as the pair confront Brainiac, a superintelligent threat portrayed by Lars Eidinger.

Rachel Brosnahan will reprise her role as Lois Lane, while Skyler Gisondo returns as Jimmy Olsen, Sara Sampaio as Eve Teschmacher, Isabela Merced as Hawkgirl, Nathan Fillion as Guy Gardner and Edi Gathegi as Mister Terrific.

Milly Alcock is also returning as Superman’s cousin Kara Zor-El after appearing in a cameo role. She will follow that appearance with a leading role in this summer’s DC film “Supergirl.”

The sequel will additionally mark Aaron Pierre’s big-screen debut as John Stewart. The character is set to first appear in the HBO Max series “Lanterns.”

Beyond writing and directing his “Superman” movies, Gunn has served as co-head of DC Studios with Peter Safran since 2022.

Gunn previously praised Safran in January, describing him as someone who complements his own strengths and helps keep the studio’s operations aligned.

“Peter’s the best,” Gunn said. “He does everything I don’t do well. He keeps the ship steady, keeps everyone aligned, connects us with Jim Lee and the comics side and unifies departments that used to operate separately. What we share is a genuine love for these characters. We know what a privilege it is to help shape how people see them now — and that responsibility is something we take seriously.”