The Cloverfield Paradox scribe Oren Uziel is penning the script, but not much else about the project is known at this point. However, the studio's desire to turn this property into a full-fledged feature film could be indicative that they have more confidence in her than do in Superman, whose Man of Steel sequel was scrapped.
Right now, Superman's cousin enjoys her own TV show on the CW, where she's played by Melissa Benoist. It was recently renewed for a fourth season that will premiere this October.
Created by Otto Binder and Al Plastino, Kara Zor-El made her comic book debut in 1959's Action Comics #252. She too is from Krypton, but arrived on Earth as a teenager. Supergirl (aka the Girl of Steel) has all the powers of Superman with none of his moral restraints, making her a danger to herself and others. Her chosen human name is Kara Danvers.
The character recently received a new comic book series at DC from writer Marc Andreyko and artist Kevin Maguire. Issue #21 of the goes on sale August 8 and features Kara dealing with the devestation caused by Brian Bendis's new Superman villain, Rogol Zaar.