Batgirl

Batgirl was originally scheduled to be released sometime in 2022 on HBO Max, though it was reportedly being reconsidered for theatrical release by Warner Bros. Discovery by April 2022. It would've been part of the DC Extended Universe (DCEU).

Plot
The plot for the movie is currently unknown.

Why It Was Cancelled

 * The test screenings was poorly-received.
 * Warner Bros. Discovery's boss, David Zaslav, wants to refocus on theatrical releases just a couple of years after Warner Bros. shattered the theatrical mold and began releasing films to HBO Max and theaters day-and-date to combat COVID-related theatrical shortcomings.

Results

 * Despite being finished, it was scrapped by Warner Bros. Discovery.