With the whole rebranding/relaunch of Turtle Rock's Evolve - now called Evolve Stage 2 - last month, the one feature we noticed that was missing was any option to play the game purely cooperatively. The most recent update has rectified that by adding a co-op option back into the game.
With update 2.05, there's an option now to queue up for Co-Op vs AI matchmaking, similar to what Blizzard's Overwatch does. This new queuing option will allow you and up to three other players team up to hunt and take down an AI controlled beast. Characters will still earn experience in this mode, and you'll also be able to earn Silver Keys, so if you prefer playing this way instead of against another person, it's a completely viable option.
The full patch notes can be found over on Steam. One quick noteworthy bullet point that's hiding in there is this little gem: "This is just our first step into Co-op with Evolve Stage 2." Hopefully that means they'll be bringing back some of the other co-op modes found in the legacy version of the game.