From Slashdot, of all places:

Xen Team writes "The University of Cambridge Computer Laboratory Systems Research Group is pleased to announce the open source release of Xen, a virtual machine monitor for x86. [Slashdot]

Looks like PC virtualization is getting more attention. Xen seems to suffer from the x86’s lack of native virtualizability–they need client OSes to be slightly modified to work correctly, but it’s a nice start. I’ll post more comments once I’ve had time to read their paper.