https://wccftech.com/call-of-duty-warzone-high-resolution-playstation-5-xbox-series-x/

A new Call of Duty Modern Warfare and Call of Duty Warzone High Resolution Pack is now available for download on consoles, including high resolution textures.

The new texture pack, which is also available is now available for download on PlayStation 5, PlayStation 4 Pro and Xbox Series X. The listing doesn't provide any specific, but reports suggest that weapons and character models look sharper.