Are kernel zones notably different from VMs (plus integration into the existing "zone" concept)?
Illumos/SmartOS has had KVM support since 2011; Oracle Solaris 11.2 is from 2014.
Illumos/SmartOS has had KVM support since 2011; Oracle Solaris 11.2 is from 2014.
Edit: forgive the terse reply - on mobile