The upcoming web-based management tool for physical and virtual machines from Sun, Ops Center, will be available January 8, 2008 according to The Register and other .
Sun will give away Ops Center for free, also releasing the source code next week, but there will be a commercial version with support and services for $100-$350 per managed server.
Since the new xVM hypervisor will be released only in Q2 2008, this very first edition of Ops Center will not have any suppor for it. An update will be available at xVM release timeframe.