According to the latest reports, Call of Duty Warzone will be switching to a WW2 setting later this year, shortly after the launch of Call of Duty: Vanguard. This major change will also introduce a new Pacific map.
Activision won't be revealing their brand new Call of Duty game at E3 2021 according to the latest reports. The publisher have opted to push such announcement to later this summer, likely via an in-game event in Call of Duty Warzone, similarly to how they did the Call of Duty Black Ops Cold War reveal last year, VGC reports.
Additionally, the report states that Call of Duty Warzone will be getting a brand new map when Call of Duty Vanguard releases later this year. Apparently, it's set in the Pacific theatre of World War II and will be the series' largest (significantly larger than the current Verdansk map) and most ambitious map to date.
On top of this, the content update will also introduce new vehicles to cater to the huge size of the new Pacific map so expect this to be quite a change, perhaps the biggest one yet in Call of Duty Warzone.
The report states that virtually every internal studio at Activision is now helping with the development of Call of Duty Vanguard, which certainly does not sound promising. We've heard before that the game is behind the schedule and could be delayed but it seems that Activision are doing everything they can to make sure that does not happen.