[Update #2: Apple appears to be resolving this issue.] [Update: It seems that the issue is affecting more than just Warner Bros movies. Users report that 4K titles from Columbia, MGM, 20th Century Fox, and others have also reverted to HD. This suggests it’s likely a bug on Apple’s part.] Over the last several days, […]

https://9to5mac.com/2019/05/14/itunes-warner-bros-4k/