The Flash Synopsis
The Flash is a movie in early stages of development about Barry Allen as The Flash. The film is the sixth film in the DC Extended Universe. There are rumurs of the first human Green Lantern (Hal Jordan) appearing in the movie either as a supporting character in the story or simply making a cameo.
Ezra Miller will play Barry Allen in The Flash, debuting in 2018. The actor will likely have a cameo appearance in Batman v Superman: Dawn of Justice, where the entire Justice League team will presumably be revealed for the first time.