Xen officially in Solaris !
Xen is an hypervisor technology. What it basically means is that it allows to run several different Operating Systems on one machine. A popular commercial hypervisor is VmWare. XEN is an open-source product that has got many fans in the industry.
In august last year, a Sun engineer announced that it was possible to boot several Solaris 10 instances on one machine using Xen.
Now Sun is announcing that Xen will be part of OpenSolaris in the next weeks, which means that we’ll have it in Solaris eventually. Link to OpenSolaris Xen community
T : Xen, OpenSolaris