Solaris 10 11/06: The ability to clone a non-global zone is now available. See Solaris 10 11/06: Cloning a Non-Global Zone on the Same System.
Solaris 10 8/07: Information on boot arguments has also been added. See Solaris 10 8/07: Zone Boot Arguments.
Solaris 10 5/09: ZFS clone has been implemented. When the source zonepath and the target zonepath both reside on ZFS and are in the same pool, the zoneadm clone command automatically uses ZFS to clone the zone. If both zonepaths are non-ZFS, or if one is ZFS and the other non-ZFS, the code will use the existing copy technique.