HBO makes major U-turn on Max after just two years / Max streaming service is reviving the HBO name -- the one it discarded two years ago / HBO reveals first part of Harry Potter TV cast, including Dumbledore and Hagrid / HBO Go HBO Now HBO Max Max Is Changing Its Name to HBO Max / HBO is back: Warner Bros walks back rebrand of Max streaming service / Max pivots back to HBO Max as WBD rethinks ability to compete with Netflix / Max streaming service is reviving the HBO name - the one it discarded two years ago / HBO chief teases Larry David return