According to this new report from Paula Rooney, Red Hat will probably let Xen rot, in due time. Citrix is not serious about developing it anyway.
Red Hat said it will continue to support the Xen hypervisor in its enterprise 5 Linux release for several years but has embraced KVM for the long term. Last year Red Hat purchased KVM pioneer Qumranet to lead the way.
As Eben Moglen says in the following video, Microsoft is "used to buying stuff or crushing stuff." In the virtualisation space, Microsoft does exactly that for survival. But how does that benefit consumers?
By harming virtualisation for Red Hat, Microsoft hopes to suppress the use of GNU/Linux in the server room. It's already working on the hijack of open source software (see OSBC 2009 for details). Regarding Microsoft's crusade to move all of "open source" to Windows, Pamela Jones wrote a couple of days ago: "Where to begin? First, open source applications running on Windows means no Linux kernel to benefit from. Note the article tells you clearly that Microsoft is still working hard to try to get open source applications to run right on Windows. Why not benefit from the full Linux experience instead of limping along on Windows, always a step behind? No. Really. And you might want to reread this article by Bruce Perens on the overview, to understand what I mean and what I think Microsoft means." ⬆
"I would love to see all open source innovation happen on top of Windows."