https://www.gameinformer.com/2019/03...e-back-4-blood
So the teams back together, they can't use the name because of valve, valve doesnt want to make shooters anymore so they are teaming up with warner bros to make a "totally original" 4 player zombie shooter across movie like campaigns with a versus mode.
So yeah, its been ten years but, as long as its not another evolve, maybe we can finally get a new left 4 dead even if the names different. Personally i loved 2 and have been hankering for a sequel for years but neo valve is neo valve and all that so clearly thats never happening. But same team, same idea different name? i'll take it.