Someone on twitter found some marketing assets for Gotham Knights, and one of them contains a "2022 Spring" release window. Now, if you don't know, Gotham Knights was originally planned for a 2021 release date, so this was obviously made after the delay. With Suicide Squad also dropping sometime in 2022, this would make sense.
BONUS: Here's a thread with some concepts of the key art for Gotham Knights
BONUS: Here's a thread with some concepts of the key art for Gotham Knights