That's not to say mum's the word on Call of Duty 2021 , however. The latest rumors and reports seem substantial enough, indicating the game is called Call of Duty: WW2 Vanguard . Now, that's most likely a code name, but that like much else of the title remains to be seen. This presumably-developed-by-Sledgehammer-Games title is also said to take place during World War 2, and that begs a few questions. In terms of Call of Duty: Warzone , which it seems fated to merged with, that would involve goi...