CD Projekt RED has confirmed to Eurogamer that it will not be upgrading The Witcher 3: Wild Hunt to take advantage of the PS4 Pro’s features. The studio has stated that to do so would be too time consuming with the majority of the team working on Gwent and Cyberpunk 2077. While the game does support 4K on PC it seems that it just wouldn’t be worth doing for console.
“Since we want to fully focus on Cyberpunk 2077 and Gwent [standalone game], and converting The Witcher 3: Wild Hunt from a full HD game into a 4K one [on console] would be too much of a time and resource-consuming process, we decided not to release an edition of Wild Hunt supporting the new features of PlayStation Pro,”
It may be a bit of a shame to those who would like to experience the game in 4K on console, but The Witcher 3: Wild Hunt is a fantastic looking game regardless.