As reported by Polygon the original creators of Left 4 Dead, Turtle Rock Studios, are working on a new game called Back 4 Blood. Not much is known about it aside from the fact that it will be a spiritual successor to Left 4 Dead. They were clear to point out it will have a lot of differences but you can still shoot up a lot of zombies Left 4 Dead style. They aren’t really ready to talk about it and haven’t released any screenshots or videos yet. There will be a campaign, a versus mode and they explicitly said no battle royal and is slated for Xbox One, PS4, and PC and has no release date. Best wishes and may the gaming gods bring you glory.