>VMware vSphere®5: The Best Platform for Cloud Infrastructures – is launched on July 12, 2011. The download is still not available yet but you can register on vmware.com and when the download for the same is available, they will update you via an email .
New vSphere 5 licensing model is totally different as it was vSphere 4.
The VMware vSphere 4 the licensing model was per physical processor based on the number of cores per CPU and the physical memory.
The VMware vSphere 5 license model is based per physical processor and the allocated memory (vRAM) across the entire vSphere environment for a particular vSphere 5 edition (pool).
VMware has released a video which explains the new vSphere 5 licensing model.