Ray tracing, FSR 2.1, DLSS 3, improved screen space reflections, improved foliage, better textures and more.
New camera option that'll bring you closer to the action, combined with alternative Quick Sign casting option, map filtering and the option to dynamically hide the minimap.
Photo mode, bug fixes and the integration of some community-made favourites in addition to CDPR's own modifications, cross-progression (like they added for Cyberpunk)
Netflix DLC includes alternative looks for Dandelion and Nilfgaardian soldiers as well as a new quest inspired by the show where you'll be able to get diagrams for new equipment for Geralt.