There’s a new PDF about performance enhancements in ESX 3.5:
The new features in VMware® Infrastructure 3 makes it even easier for organizations to virtualize their most demanding and intense workloads. The new version of VMware Infrastructure 3 provides significant performance enhancements, including the release of VMware ESX Server 3.5 and a new ultra-thin hypervisor called VMware ESX Server 3i that can significantly.
Download:
http://www.vmware.com/files/pdf/vi3_performance_enhancements_wp.pdf