Discovery announces new leaders for soon-to-be Warner Bros. Discovery.. Appointments and Executive Changes, Cable Television, Mergers, Acquisitions and Divestitures, Television, CNN, Home Box Office, Warner Bros Discovery, Warner Brothers, Warner Media LLC, Sarnoff, Ann, Zaslav, David M, Emmerich, Toby (1963- ), Bloys, Casey, Licht, Christopher A (1971- )