On his Threads account, Gunn responded to a fan's question about the release of the first teaser for Legacy, the initial film in the Chapter One: Gods and Monsters lineup of five new DCU movies. Despite completing the screenplay, Gunn confirmed there won't be a Legacy trailer in 2024, emphasizing that filming doesn't commence until March. He added, "Writing is basically done and has been for a while, other than a comma here, a comma there."

There were rumors fans could see the first Legacy trailer at this summer's San Diego Comic-Con. However, the newest update from Gunn seemingly shuts down that possibility. Filming for Legacy was set for March after work on the upcoming Superman movie was delayed due to the WGA and SAG-AFTRA strikes. Additionally, a logline for Legacy was leaked in December, stating, "Superman, a cub reporter in Metropolis, embarks on a journey to reconcile his Kryptonian heritage with his human upbringing as Clark Kent." However, Gunn later clarified that some of the plot details were inaccurate.

In the meantime, Gunn has assured fans production for Legacy has been going smoothly, revealing in another recent social media update that, "It's going swimmingly. Sets being built, costumes being finished, actors studying roles, prosthetics and VFX models being made, flights booked. Here we go." Principal photography will take place in Lilith, GA.