It's a bird, it's a plane, it's a ... casting shakeup! Warner Bros. has just lost its Superman, with actor Henry Cavill reportedly leaving the studio following the critical and commercial failure of Justice League. Cavill's departure was reported Wednesday by The Hollywood Reporter, which notes that Warner Bros. was hoping Cavill would cameo as Superman in its upcoming film Shazam!, but the appearance will apparently no longer happen because of the actor's busy schedule.