No way they make a major ZFS update past a RC stage.
It wouldn't be a new change:
Code:
root@freebsd15:~ # freebsd-version -kru
15.0-RC1
15.0-RC1
15.0-RC1
root@freebsd15:~ # zfs --version
zfs-2.4.0-rc3-FreeBSD_g814f9afba
zfs-kmod-2.4.0-rc3-FreeBSD_g814f9afba