VMware vSphere is here! It was available from the 21st of May and if you have a current support subscription for VI3 you can upgrade.
VMware vSphere is the industry’s first cloud operating system, transforming IT infrastructures into a private cloud—a collection of internal clouds federated on-demand to external clouds—delivering IT infrastructure as an easily accessible service. Enable the next generation of flexible, reliable IT services with the efficiency and low cost of cloud computing—featuring uncompromising control over service levels.
VMware vSphere Detailed Comparision
Editions Overview