The patch offers enhanced shadows, ambient occlusion, and texture filtering, as well as higher resolution textures and support for 4K resolution.
This is great news for anyone who already picked up the game, whether when it was fresh, or maybe even as recently as this last Black Friday, and provides tangible benefits to anyone with an Xbox One X regardless of whether they’ve plugged it into a 4K television or not. The game is going to look significantly better in either case. While I played through the game on my PC, CD Projekt RED has me considering picking the game up a second time to check it out with HDR and full 4K resolution.
The patch is out now, and the developer promises that a PlayStation 4 Pro HDR patch is coming soon, too.
Article source: https://www.technobuffalo.com/2017/12/21/witcher-3-xbox-one-x-enhanced-60-fps/