It's not like we've been hearing about Call of Duty: Vanguard in recent weeks. Hence, it doesn't come as a surprise that Activision decided to skip E3 2021 this year for their next Call of Duty title. Still, we could have used even just a small glimpse of what is to come. However, it might just be the right choice for Activision.
The Video Games Chronicle reports that Activision will likely be revealing Vanguard via Warzone instead. This makes perfect sense, given that the audience will already be a captured market for Activision. Besides, you won't want your base demographic accidentally seeing the new Battlefield 2042 game on E3 and decide it's better than Vanguard. It's a smart idea to make sure that the reveal of their next Call of Duty game will be seen by who is most likely to buy it: existing Call of Duty fans.
This isn't the first time they're doing this. Given how successful Black Ops Cold War was, it might have been because of how Activision decided to reveal that game. They did so using Warzone, and the sales record speaks for itself. Hence, it's not surprising to see Activision going with the same strategy. Revealing Call of Duty: Vanguard on Warzone will make sure that existing Call of Duty fans will know about the new game. The trailers and reveal information will eventually be shared by video game journalists afterward, anyway.
Call of Duty: Vanguard goes back to World War II, set in the Pacific theater of the war. This is completely the opposite of what Battlefield developer DICE is doing, who is taking Battlefield 2042 to the near future. Still, not because we're going back to the past doesn't mean there will no longer be any zombies around.