At the same time, Kripke revealed that the writers’ room was already working on the next set of episodes, and gave a hint about when they planned to start filming. He said, “the world has given us way too much material. We hope to be shooting in early 2021, but that’s up to a microscopic virus.”
There was a 14-month gap between the start of The Boys Season 1 (which began in July 2019) and Season 2 (September 2020). If there is the same gap between 2 and 3, then fans can expect it to begin in November 2021.
During a New York Comic-Con panel in the lead up to the finale, Kripke gave an update on the status of Season 3. He said" “We’re in the writers’ room cooking through Season 3, so we’ll get that you as soon as we can, COVID willing.”
He told Collider: “There’s one role we’re already talking about. We have to coordinate. Because you know, he’s on The Walking Dead, so he has another home. But we already talked about one role, and there might be a potential other that we’re talking about.”