This months Humble Monthly features Call of Duty: Black Ops 4 Battle Edition. The Battle Edition includes the Multiplayer and Blackout game modes. The Zombies mode is not included. A one-month Humble Monthly subscription costs $12, and you can cancel at any time. If you buy an annual subscription, you get one month free.
Source: N4G PC Call of Duty: Black Ops 4 Battle Edition is with Humble Monthly