Over the course of the last week or so, multiple Warner Bros movies that were previously available in 4K have reverted to HD, a change that applies to new purchases from iTunes as well as previously purchased movies.

There are complaints about the change both on Twitter and on the Blu-ray forums, as highlighted by 9to5Mac this afternoon. There are quite a few titles that have reverted from 4K to HD, including all of the Harry Potter movies.

Källa: Many Warner Bros Movies Have Reverted to HD Instead of 4K on iTunes and in User Movie Libraries