This it pretty much implied in a new job listing, where it is also revealed Unreal Engine 5 is the chose game engine.

Rocksteady is looking for a Senior Core Engine Programmer to join ourteam working on our upcoming unannounced AAA title. The ...

Justice League vs. Godzilla vs. Kong 2 #1 will feature a main cover by Duce with variant covers by Dan Mora, Alan Quah, Gabriel Hardman, John Giang, Kevin Maguire, and Carlos D’Anda.