The Witcher 3 PS5 and Xbox Series X versions are in development, and those with the PS4 and Xbox One versions will get the upgrade for free.
Xbox Series X - The Witcher 3 Edition [OC] : r/XboxSeriesX
The Witcher 3: 10 Best Improvements In The Next-Gen Update, According To Reddit
The Witcher 3 Next-Gen Patch 4.02 - The Best It's Ever Been - PS5 vs Xbox Series X/S
The Witcher 3: PS5 vs Xbox Series X Hands-on - Ray Tracing + 60FPS Modes Tested
Xbox Series X - The Witcher 3 Edition [OC] : r/XboxSeriesX
The Witcher 3: PS5 vs Xbox Series X Hands-on - Ray Tracing + 60FPS Modes Tested
The Witcher 3 PS5 & Xbox Series XS release date leaked by UK retailer - Dexerto
The Witcher 3 to be free on PS5 and Xbox Series X for current owners - Dexerto
The Witcher 3: Wild Hunt PS5 and Xbox Series X/S Versions Coming Second Half of 2021 - IGN
The Witcher 3: Wild Hunt (PS5, Xbox Series X
Series S vs. Series X vs. PS5 The Witcher 3 Next Gen Update Loading, Graphics & FPS Comparison