Some of the new features are:
1) Block cloning support for allowing files or portions of files to be used for reflinks / file-level copy-on-write handling
2) Linux container support with various Linux-specific container interfaces now supported, support for OverlayFS, IDMAPPED mounts in a user name-space, and other features.
3) BLAKE3 check-summing that is much faster than SHA-256 and SHA-512.
4) Corrective “zfs receive” for healing corrupted data in file-systems
/root 