There's also USB 3.0 device support for new Macs (which requires Windows 8 or Linux with USB 3.0 support), accelerated 3D desktop support for Linux (including Ubuntu 12.04 LTS 4), improved network performance when using multiple vCPUs, and you can even run OS X Mountain Lion in a virtual machine.
But wait, there's even more! You can run VMware ESXi 5, Linux KVM and Xen, and Microsoft's Hyper-V (experimental) hypervisors in virtual machines.
Actually, I haven't listed all of the improvements ... I haven't even had my hands on Fusion 5 long enough to get around to running Windows 7 or 8 yet.
I did run up a Lubuntu 12.04 image and, wow! The performance is fantastic. If you haven't come across Lubuntu it is described on DistroWatch as "a fast, lightweight and energy-saving variant of Ubuntu using the LXDE (Lightweight X11 Desktop Environment) desktop. It is intended to have low-resource system requirements and is designed primarily for netbooks, mobile devices and older PCs."
All in all, this is a great release that really ups the ante for virtual machine technology under OS X. For that achievement, VMware Fusion 5 Professional Edition priced at $99.99 gets a Gearhead rating of 5 out of 5.
Read more about data center in Network World's Data Center section.