Warner Bros. Games and Turtle Rock Studios are developing a spiritual successor to Left 4 Dead called Back 4 Blood. According to a description that was removed but captured by users on the r/pcgaming subreddit, the cooperative first-person shooter will be available for Xbox Game Pass subscribers to enjoy on day one in addition to its standard releases on the PC (Steam, Epic Games Store), Xbox One, Xbox Series X|S, PS5, and PS4 platforms. The description notes that Back 4 Blood will be available for both PC and console tiers of Xbox Game Pass.
Back 4 Blood is a thrilling cooperative first-person shooter from the creators of the critically acclaimed Left 4 Dead franchise. You are at the center of a war against the Ridden. These once-human hosts of a deadly parasite have turned into terrifying creatures bent on devouring what remains of civilization. With humanity’s extinction on the line, it’s up to you and your friends to take the fight to the enemy, eradicate the Ridden, and reclaim the world.
Sources: r/pcgaming, Back 4 Blood