If you look at VMware's homepage these days you will notice an announcement of a live event on July 12th. It is titled "Raising the bar, Part V".
You don't need to be a visionary to figure out that this can only mean that VMware will announce the long-awaited new major release of its virtualization platform: vSphere 5.
This does not necessarily mean that vSphere 5 will become generally available on July 12th. However, once it is available I will post a list of at least the most important new features of it. So, stay tuned!