Gamers should never be forced to purchase the same game twice or pay for upgrades. Owners of #Cyberpunk2077 for Xbox One will receive the Xbox Series X upgrade for free when available. https://t.co/nfkfFLj85w— Cyberpunk 2077 (@CyberpunkGame) February 24, 2020
This confirms that 2077 will be getting next gen versions.
Hopefully other developers follow this example for their cross gen games.