Gotham Knights Could Have 4-Player Co-Op According To PSN Listing - Game Informer

The description for the game still mentions co-op with up to one other player, though.

Game Informer Issue October 1998, PDF, Video Games

Gotham Knights: How To Unlock Fast Travel

Gotham Knights release date, gameplay, and story

Gotham Knights Team Explains Why They Chose 2-Player Over 4-Player Co-Op

News - March, 2022

Gotham Knights' Won't Be Available on the PS4 or Xbox One

Gotham Knights will get standalone 4-player Heroic Assault mode after launch

According to PlayStation Store, Gotham Knights has four player co-op - Game News 24

Gotham Knights is a brand-new open world, third-person action RPG featuring the Batman Family as players step into the roles of Batgirl, Nightwing,

Gotham Knights Collector's Edition - PlayStation 5

Gotham Knights Will Get 4-Player Co-Op In November

Gotham Knights' 4-Player Heroic Assault is Great News for Co-Op Fans

Gotham Knights' PlayStation store listing suggests four player functionality

Gotham Knights Multiplayer: Co-Op Mode, Split Screen, and Crossplay Options Explained