Linux kernel developers are working on a standard virtual machine interface. VMWare seem to be leading the discussions with Xen mainline acceptance affected.
script 1
linus: I've built a virtual universe bruce: does it adhere to the new VMware api? linus: we'll have to see. their cheque hasn't cleared yet. linus: Also, I made it less analogue than real life. Black and white. Good and Evil. All very efficient and easy to understand bruce: so what you are going to do with it? linus: I've trapped Eric inside it. He thinks it's real life. bruce: awww look at him blogging, isn't he cute!