The studio has been dropping hints about the game since last September, but those teasers have accelerated in the last week. WB Montreal announced that its next game will be featured in a developer panel at the show, and then it began dropping clues through a teaser site that revealed a map and references to villains like Two-Face.
WB Montreal's developer talk isn't the only DC Comics-based video game revealed during Fandome. Rocksteady also showed off Suicide Squad: Kill the Justice League. Unlike Gotham Knights, this game takes place in the same universe as the Arkham games, acting as a semi-sequel. It also takes place at least partly in the much brighter environment of Metrpolis, whereas the Arkham games and Gotham Knights have been set in Gotham City.
https://www.gamespot.com/articles/gotham-knights-revealed-is-a-co-op-game-where-batm/1100-6481037/