- As expected, the upgrade now supports Leopard
- Better 3D graphics via the "experimental support" for DirectX 9.0
- Full Vista and XP support
- A beta version of VMware Importer, a tool that allows users to quickly import virtual machines (including Boot Camp)
- Overall better speed and performance
Lee says that, unlike Boot Camp, it's not necessary to shut down your Mac and reboot into Windows every time you want to get to a Windows app. Instead, just use the Unity tool to co-mingle your Windows and Mac apps right on the same screen.
On the other hand, if dual-booting is your thing, you can always use Importer to create a virtual machine.
The upgrade is free for existing customers. If you're ready to try it out for the first time, snag a free 30-day evaluation from the company Web site or purchase it for $59.99 with a $20 rebate (US only).