https://wccftech.com/cod-black-ops-4-map-pack-1-leak/

Call of Duty: Black Ops 4’s first big free update, Operation Absolute Zero, drops this week, but what about the game’s first chunk of paid DLC? Well, apparently that’s already in some players’ hands! Last night, some Australian Black Ops 4 players found they were able to briefly access a developer build of Multiplayer Map Pack 1 from the PlayStation Store. Treyarch acknowledged the mistake on Twitter, and have promised the “real deal” release is coming sometime today.

We’re aware that some gameplay footage featuring pre-release versions of upcoming Black Ops Pass content has released in some regions a little earlier than planned.