The Witcher 3: Wild Hunt just got an Xbox One X patch.
The One X patch has many improvements to visuals and has two main modes. 4K mode and Performance mode. 4K mode has the game running at 4K with a stable 30fps performance. Performance mode enables dynamic resolution scaling from 1080p to 4K with a 60fps target. HDR is supported in both modes.
The PS4 Pro will receive HDR in a patch soon. It looks like the PC version won’t be getting HDR. The Xbox One X patch changes are as follows:
2 new graphic modes: 4K Mode and Performance Mode
support for 4K resolution
enhanced shadows, ambient occlusion and texture filtering
higher resolutions textures
dynamic resolution scaling (from 1080p to 4K)
The Witcher 3 is available on PlayStation 4, Xbox One, and PC platforms.