Flash was to be released and then Aquaman 2.
Flash resets the DCEU and sets Michael Keaton as Batman going forward.
Aquaman 2 filmed scenes with Michael Keaton as Batman.
Aquaman 2 got bumped to March 2023 and Flash bumped to Summer 2023 which caused the movies to be out of order, so they replaced Michael Keaton Batman with Ben Affleck Batman (because Keaton would not be (re)introduced into the DCEU until Flash.
Aquaman 2 was bumped again to December 2023 (putting the movies back into the correct order).
Will Michael Keaton Batman now be restored back into Aquaman 2 (and Ben Affleck Batman be removed) since he is introduced in Flash as the DCEU Batman going forward?