The document describing how to virtualize EBS RC0 on Hyper-V has just posted. 

I don't expect virtualization to be a mainstream case in most midsize businesses because we have loaded each EBS server already.  That said, virtualization is a great way to "kick the tires" without having to find three x64 servers (you just have to find ONE powerful server).  I am most interested in what fail-over/backup/recovery scenarios people come up with when Hyper-V and EBS both release to manufacturing.