[Update]: Gotham Knights' newest Nightwing & Red Hood preview is sadly looking quite janky.
Nearly a full year has gone by since the last big delay, but I'm happy to say that Warner Bros. has now finally revealed the (hopefully final) release date for the open-world Batman spin-off Gotham Knights. So if you're in the mood for messing around with Batgirl, Nightwing, Red Hood and Robin, make sure to mark October 25th, 2022 on your calendar!
As for what exactly you can expect to see in terms of gameplay, that you can find out through two of the trailers below. They're a tiny bit outdated by this point, but they should still clue you in quite nicely. Have a gander, starting with the cinematic and ending with the more gameplay focused preview:
I'd love to tell you more, but I'm afraid that's pretty much it for the time being. Once that changes, most likely in a couple of months once we're closer to Gotham Knights' launch, I'll make sure to let you know.
Until then, you can read a few tidbits about Gotham Knights and its characters over at the official website. Enjoy!