With Operation Absolute Zero, Treyarch is bringing new content to all three modes of Black ops 4, including the Blackout map getting some free frosty changes, starting tomorrow.
Announced by Treyarch, the update will hit the PlayStation 4 on December 11, and soon after on PC and Xbox One. The battle royale mode Blackout will be receiving a winter flavor, with snowy additions changing foliage and softening the lighting. New smoke trails will be used to better indicate where players are dropping, and more subtle changes will be coming to Nuketown Island, Hydro Dam and Factory.
Source: IGN.com Call of Duty Black Ops 4 Blackout Map Getting Seasonal Changes