BigTnaples
Todd Howard's Secret GAF Account
That and it's one of the leanest install sizes for a AAA game this gen. Translation=those assets ain't all that.
The assets in terms of textures are mostly the same, and in fact most are upgraded.
Geralts Character model and other NPC have received massive upgrades in fidelity, also PBR has been added, as well as enhanced textures in many areas.