Tonight I installed the Preview of Windows Small Business Server code name “Aurora” on VMware.
I used the instructions/tips from my VMware install of WHS Vail to setup the VMware app for this install too.
From hitting the install button to arriving at the desktop took 57 minutes.
On my first pass through Aurora appears to be very similar to WHS Vail, it also has considerably less system requirements than SBS 7 (also available for testing @ connect).
Here are some screenys from my testing.
MS Security Essentials installed fine (I used the same version that worked on WHS Vail)