“With Batman likely shooting in 2018, WB still would like one more DC property to shoot this year other than Aquaman.
Justin Kroll, who broke the news on Twitter, was the same reporter who revealed a few days ago that The Batman won’t start filming until 2018.
As for what film could fill the void left by The Batman, it isn’t known if the studio is leaning towards any particular project.
As of now, it hasn’t been confirmed when Gotham City Sirens may be filming, or if it will be this project that takes over for The Batman on DC Films’ release schedule.