We are considering using Kernel Zones, so that Solaris 11 patching can be done on a per zone basis. We intend to use Solaris 11.4 global zones, with a mixture of Solaris 10 and 11.3 non-global zones (KZ only for the 11.3 zones). The hardware will be T8-2 and S7-2. This is a production environment so stability is critical. An Oracle person hinted that KZs where not yet "mature" enough for production, and I just wondered if this is considered true and whether members are using them in anger, and what experiences they are having?