A next-gen version of Biomutant for Xbox Series X / S and PlayStation 5 will be released at a later date.
Biomutant will be released on May 25, 2021 for Xbox One, PlayStation 4 and PC. THQ Nordic has now officially confirmed that a native and improved version for Xbox Series X / S and PlayStation 5 will be released at a later date.
According to a FAQ report:
“What platforms will it be available on? May 25, 2021: PC, PS4, Xbox One. Sometime in the near future: native version for PS5 and Xbox Series S / X. “
Thanks to @xcoop_gaming for the tip.