Warner Bros. is currently developing a project based on Vixen, who was previously adapted on CW's Legends of Tomorrow.
Vixen, Darian's DC Extended Universe Wiki
DC Movies That Are Currently In Development (And Others That Are Rumored)
Vixen: Season 1 Review - IGN
Complete Disaster: James Gunn DCU Off To A Rough Start - BAITING IRRELEVANCE
DC Is Rumored to Be Focusing More on Supergirl
The Direct
DC Comics Weekly Rumor Roundup! - GoCollect
Diana Prince - News - IMDb
New Flash 'Worlds Collide' Movie Poster Released - DC Comics News
What would you do to fix the DC Extended Universe? - Quora