https://wccftech.com/witcher-3-xbox-one-x-update-analyzed/

The Witcher 3 Xbox One X update that was released yesterday has been analyzed by both NXGamer and VGTech, and the results are promising.

The patch offers, among other enhancements, two graphic modes, including a performance mode and a graphics. Additionally, HDR is also supported on Microsoft’s new Xbox One console. If you’re interested in the full changelog for the update, check CDPR’s official post right here.