There's going to be DLC released for Evolve. You're going to have to pay for some of it. This is what you need to know if you plan on buying the game.

1. Evolve’s fourth playable Monster, Behemoth, is coming this Spring and is as enormous as the name implies, becoming a giant, destructive boulder that can roll through the environment for quick traversal; Check out the all-new trailer for a first look at Behemoth!
2. The Evolve Hunting Season Pass will include four new playable Hunters coming this Spring and three exclusive Monster skins available at launch.
3. A Digital Deluxe Edition is available for all platforms, as well as a PC digital exclusive PC Monster Race Edition.
o As part of the digital edition reveals, it is confirmed that a fifth playable Monster character and two more additional Hunter characters are planned as DLC on Xbox One, PS4, and PC.

Even if a player never purchases a single Evolve DLC character, he or she will still have the opportunity to play against those characters in online multiplayer or offline solo, further enriching a players’ gameplay experience long after they originally purchased the game. Not only that, but all maps and other community features will be free.

HUNTING SEASON PASSES
If you love the idea of more Hunters bringing a lot of additional variety to the hunt, you’ll want to keep an eye on this. The Evolve Hunting Season Pass contains four new Hunter characters (one from each class), as well as three new Monster skins (Magma Goliath, Magma Kraken and Magma Wraith.) and will only cost you $24.99. Considering that if you bought them all separately, all of that content will run you about 30 bones, stash that extra $5 in your pocket as a thank you for joining us on the hunt.

The Monster skins will be available on launch day and the upcoming Hunters will be available as released. (More details on the downloadable Hunter characters will be available as we get closer to their release after the release of Evolve on February 10, 2015. In the meantime, let the inevitable speculation on the new Hunters begin!)

So, $25 for the Season Pass that gets you some extra characters (four) and some Monster skins (three).