Gotham Knights isn't set to come out until October 21, but it looks like a handful of gamers have got their hands on copies of the game early and they're now leaking sensitive information online.
The physical copies in the hands of the involved individuals are the reason why you might have seen gameplay footage of Gotham Knights online from non-official sources. Someone even managed to upload the first 30 minutes of Gotham Knights from the PlayStation 5, although this was quickly taken down.
If you don't want the story of Gotham Knights to be spoiled for you, you might want to stay off the internet for now.
The most interesting part about Gotham Knights is the lack of a review. Usually, the review embargo lifts a week before the game comes out. In this case, critics should've already published what they think of the game over the weekend. Instead, there doesn't seem to be a review in sight.