Ezra Miller's fast-paced superhero solo feature, directed by Andy Muschietti, finally began filming last year. Given that Michael Keaton is reprising his role as Bruce Wayne/Batman, Ben Affleck is reprising his role as Bruce Wayne/Batman, Micheal Shannon is reprising his role as General Zod, and Antje Traue is reprising her role as Faora-Ul, it's highly possible that Wonder Woman will return in some way. The film will follow Miller's Barry Allen as he decides to travel back in time to prevent his mother's death, which leads to a slew of complex timeline conflicts.
Wonder Woman has been a part of the DC Universe since World war I, therefore she might appear at any time. The Flash's premise isn't too dissimilar to that of the recently released Spider-Man: No Way Home, which fared extremely well at the box office, so it'll be fascinating to see if Warner Bros. and DC do as well with The Flash. The Flash will be released on november 4th.