VMWare has released Fusion 2.0, which is a free upgrade for 1.x owners, new features / improvements of the Intel Mac virtualization such as Direct X 9.0c Shader 2.0 support in Windows allowing for more games to be played within the Virtualization software.
Another notable feature is "Experimental Mac OS X 10.5 Server Virtual Machine Support" allowing Mac OS X 10.5 Server to be run a as virtual machine on Fusion 2.0.
For details visit the Fusion website for the release notes.