If you're a zombie game fan, then one upcoming game to watch for is No More Room In Hell 2. The game's YouTube channel doesn't have a recent trailer but one of the last videos is a trailer for a map, I embedded it below. This game gives me Left 4 Dead vibes and definitely a game I want to check out when it releases.
From the game's Steam page: "In the sequel to the 2011 award-winning Source mod, you and your fellow survivors must make your way through a diseased world that has seen the dead rise to feast on the living. Cooperation and teamwork are vital if the human race is to survive this living hell."
Launch Map Showcase - Night Of The Living Dead
Video description: We're thrilled to show you the first of our Launch Map Showcases! Take a look at Night of the Living Dead – a haunting journey through a county that's swarming with teeth, terror and tons of zeds. You'll find yourself sprinting between the logs of a sawmill, dodging claws as you fight your way through town, trying not to stray from the path in the National Park, throwing caution to the wind and blowing your way through blockades, and slipping on blood in a secure facility. And if this isn't scary enough, your path through Butler County won't always be the same...