Since release. It gets a new DLC every 3 months.
Yeah, what's the game about actually, seems like Friday the 13th but with other recognized slasher series.
It's asymmetric multiplayer, 4 survivors vs 1 killer. The survivor team goal is to repair 4 out of 7 generators on a map to power the exit gates, then open the exit gate and escape. Killer meanwhile has to stop them, takes 2 normal attacks to down a survivor, once they are downed you have to pick them up and carry them to a sacrificial hook. Once hooked there is a timer that ticks down, others survivors can save you from the hook, but you can only be saved twice, or once if the timer ticks below halfway before you are saved the first time. Each killer has a unique power, for instance Freddy Krueger can pull people into his dream world, Michael Meyers stalks people which powers him up and increases his speed and attack range, and attack power at higher tiers.