Red Hat produced a video entitled Default to Open: The History of Open Source and Red Hat. Since it is about history, it has a number of older clips... bits and pieces I've seen before but quite a bit of new stuff too. Enjoy it embedded in webm format or use the link below to download it for local playback.
Default_to_Open.webm (~27 min, 121 MB)
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As has been reported elsewhere, take the front page of Red Hat's website for example, Red Hat has "acquired" Qumranet Inc for a little over $100 million. In a presentation a month or two back for the BozemanLUG meeting... I played some demo videos of Qumranet's Solid ICE product and discussed KVM. Just in case you weren't aware, Qumranet is the company that sponsors the development of the Kernel Based Virtual Machine which got merged into the mainline Linux kernel starting with version 2.6.20. KVM requires hardware support for virtualization to be present in the CPU (Intel VT / AMD-V).
Doesn't Red Hat already use Xen in RHEL?
Yes, Red Hat does use Xen in RHEL although they prefer the term, Red Hat Virtualization. Fedora added support for KVM some time ago... and Red Hat has been working hard to help KVM get to the point where it is mature enough to become a replacement for Xen. They have also been funding a number FOSS virtualization related projects (see oVirt for example) several which support KVM.