Gotham Knights was initially scheduled for a 2021 release. But Warner Bros. Games Montreal has pushed back the release of the game to next year. In a statement released on Twitter, the developers want to give the game "more time to deliver the best possible experience for players."
The studio didn't say the delay was COVID-related, but it won't be surprising if the new work-from-home setup has affected its development. Gotham Knights will be available on the PC, PS5, PS4, Xbox Series X/S, and Xbox One.
Source: The Verge