Sony will have an Ultra HD Blu-ray player -- next year
 

The PS4 Pro is launching with 4K streaming and only a standard 1080p Blu-ray disc player, but Sony is ready to announce its first Ultra HD Blu-ray device. The UBP-X1000ES will ship in the spring of 2017, however, even then it will be tough to get one...

https://www.engadget.com/2016/09/14/...yer-next-year/