VMWare released VMWare Fusion 3.0 on October 27, 2009. Among many enhancements and features, the most anticipated is compatibility with Max OSX Snow Leoparf 10.6 - specifically VMWare guests become 64-bit processes in this release.
After they resolved a few minor problems with their site, I went straight into buying the upgrade since I didn't have any doubts about the stability of the upgrade. After downloading and a brief setup, I started my existing VMs which immediately ran much faster.
My MacBook Pro's CPU use is a little lower and the system is cooler than it was before the upgrade while the VM is running.
I'm really happy with the improvements in Unity mode and overall speed - great job VMWare!