System Center Virtual Machine manager is RTM! Microsoft made an announcement today on theire website!
Microsoft is pleased to announce the release to manufacturing (RTM) of System Center Virtual Machine Manager 2008 – the next generation of Microsoft’s solution for managing the virtualized infrastructure. A key member of System Center – a centralized, enterprise-class suite of data center management products -- Virtual Machine Manager (VMM) 2008 enables customers to configure and deploy new virtual machines and centrally manage physical and virtual infrastructure from one console. New to this version of VMM is multi-vendor virtualization platform support, Performance and Resource Optimization (PRO) and enhanced support of “high availability” host clusters, among other new features.
You can donwload a evaluation version here.