https://wccftech.com/call-of-duty-black-ops-cold-map-names/

The next entry in the Call of Duty series, rumored to be called Call of Duty: Black Ops Cold War, has yet to be officially announced, but some new details on the game emerged online thanks to The Red Door beta that has surfaced last week on the Microsoft Store.

Prototype Warehouse datamined The Red Doot beta and discovered the names of the main campaign maps. They seem to suggest that the game will take place in Germany, Vietnam, Nicaragua, and Russia.