As of January 2024, David Gordon Green had stepped down from directing the movie and the film was pulled from its original release date. It is not confirmed if the movie will or will not be made.
David Gordon Green confirmed that a screenplay was written and that "The Exorcist: Deceiver" was intended to set up the original third and final installment of the new Exorcist trilogy before it's cancellation. The script for Deceiver would've shifted focus on it's protagonist and would've seen Ann (Ann Dowd) travel to Europe after the events of "The Exorcist: Believer". Victor Fielding (Leslie Odom Jr.) would not have been the protagonist, nor would Chris MacNeil (Ellen Burstyn) or Regan MacNeil (Linda Blair).