If your set was purchased prior to 2015, you might need to purchase the One-connect Evolution kit (http://www.samsung.com/us/video/tvs-accessories/SEK-3500U/ZA?CID=AFL-hq-mul-0813-11000279) to make things fully compatible. As I understand it The One Connect Box makes older sets compatible with a range of UHD standards including HDMI 2.0, HDCP 2.2, and the VP9 and HEVC codecs. It sells for around $200, but at least you don't have to buy a new set.
If your set was purchased in 2015 0r later, it should be good to go.