The Authority movie may be coming to the DC Universe a lot sooner than expected as Superman: Legacy is reportedly doing some groundwork for the team's solo film. One of the big Chapter 1 projects that DC Studios is currently working on is Superman: Legacy, which is in the midst of looking for their new Superman, along with other iconic characters from Clark Kent's lore. The film is currently eying to start filming in 2024 in order to meet its 2025 release date. While Superman: Legacy will be a new take on the DC icon, the reboot might serve as a vehicle for several more superheroes in the DC Universe.
https://screenrant.com/superman-legacy-movie-james-gunn-the-authority/