https://wccftech.com/rocket-league-native-4k60-hdr-xb1x/

Psyonix announced that Rocket League is getting its next update on December 3rd and this will be particularly interesting for Xbox One X players. After a rather long wait, the enhancements for Xbox One X hardware will be delivered, enabling native 4K@60 fps gameplay and support for HDR displays.

The developers have spoken with the official Xbox Wire blog to share more information on the Xbox One X patch.