No at the least an red engine upgrade to cyberpunk game engine. They have the tools but instead they just turned on some baked in ray tracing switch. I belive I heard them talk about updating the Witcher 3 game to the cyberpunk engine st one point
They literally had to rewrite most of the engine to support modern city environment with cars and hundreds of NPCs on screen and you think porting Witcher 3 to that is easy as pie? It might not even be doable given the vast gulf between those two games systems. Doing that would amount to a full remake.
Also, to those bitching about the nextgen update not looking like those early trailers:
Those were made when unified lighting model for the game didn't exist yet, so artists had to setup lighting individually for each scene in those trailers. Doing that is possible for a trailer, impossible for the whole game due to its scope. Obviously lighting changed when that system was implemented. Expecting this update to have same lighting as those trailers is, yet again, idiotic, because that custom lighting is impossible to recreate with unified system.
Most next gen upgrades are just higher resolution, better frames and some minor visual changes (like Uncharted 4). Are there many next gen upgrades of slightly older games which completely overhauled the visuals as some people are expecting here.
It is funny/sad how CDP does go above and beyond what 99% of "nextgen updates" offer, and they do it for 7 year old game to boot (timeframe when most devs not not even bother with updates at all, hello Ubisoft, Rockstar and plenty others), they release it
for free, and people
still bitch.