The superhero arms race continues. Warner Bros. announced its slate of DC Comics adaptations through the year 2020 recently, and then earlier this week Marvel Studios responded by announcing its own slate through the year 2019. As WB has now started moving forward with a number of upcoming films, rumors have begun to swirl about the third DC movie in line after Batman v Superman: Dawn of Justice and Suicide Squad, the Wonder Woman movie set for release in 2017. Specifically, these new rumors claim that the first Wonder Woman will be a prequel set in the 1920s and will kick off a trilogy of Wonder Woman films. More after the jump, including the film that Gal Gadot recently had to pass on due to her DC obligations.