ESXi 6.0 and vCenter Server 6.0 launched
ESXi 6.0 and vCenter Server 6.0 has been launched on 12th May 2015.
What’s New in the VMware vSphere® 6.0 Platform – Please check http://www.vmware.com/files/pdf/vsphere/VMW-WP-vSPHR-Whats-New-6-0-PLTFRM.pdf
Want to upgrade to ESXi 6.0, check the Vmware compatibility guide. http://www.vmware.com/resources/compatibility/search.php