Well this news seems certainly to come out of the blue Warner Bros. and DC have announced they are working on a Supergirl film.
Supergirl is Kara Zor-El the cousin of Superman who also managed to escape the destruction of Krypton. The difference between her and her cousin’s origins is that Kara was a teenager when Krypton was destroyed and remembers her life there. Supergirl has previously inspired a cult 80s film starring Helen Slater as well as the Supergirl series about to start its fourth season on the CW after premiering on CBS.
Oren Uziel will be working on the script but there haven’t been any producers or cast announced.