Just for the record the Wrap reported that an insider thinks they should drop the other Superman projects and focus on Cavill, but isn’t saying they will. However all of the previous guys who were supporting Abrams & Coates (and I guess MBJ assuming that was even really going to happen) are being pushed out. Kilar is gone, Sarnoff is gone, Emmerich is gone, Hamada seems set to depart once Zaslov finds his DC guy. Those projects will likely die because the supporters in the WB hierarchy left, same how Snyder got pushed out once all the execs in his corner left too.
But that doesn’t really mean that Cavill will return unless the new DC head decides they want Cavill back. I guess maybe if Black Adam is a huge success and the Rock pushes to have Superman be given to him it could happen, but otherwise I think the new DC guy will just put together a new Superman project from scratch.