Free is good.
Nobody likes a multiplayer game where a bunch of maps are unavailable because they didn't pay extra for them.
Evolve developer Turtle Rock Studios understands this, which is why creative director Phil Robb told IGN that all the DLC maps for the game will be delivered free of charge:
"One of the things we've been really careful about is that for our DLC plans, we've approached it as consumers, what [Design Director Chris Ashton] and I feel good about as consumers. The first thing we said is we can't break the community up. All of our maps will be free, we never want anyone to get booted off a server because they haven't bought something. That sucks."
This doesn't mean all DLC will be free, as the team plans to deliver new monsters and hunters as well, and those will come with a fee. However, Robb clarified that even if you don't purchase new monsters, you can still play against them with friends. As for hunters, yeah, you'll have to buy to use. Still, it's nice to see that all the new maps will be free, so you can remain totally in the loop.
Evolve was originally set for this year but was then delayed to February 10, 2015.
Related Game(s): Evolve