The Xen team is pleased to announce the release of Xen 4.2. The result of *18 months* of development, new features include: * Paging/sharing improvements for high-density VM environments (eg. VDI) * Enhancements to PV-HVM guest performance * Improved memaccess (guest introspection) support * EFI boot support, replacing the legacy BIOS boot environment * Improved RAS support * XL as the default toolstack; XEND officially deprecated * Upstream QEMU support, with its up-to-date feature list Detailed release notes, including a more extensive feature list: http://wiki.xen.org/wiki/Xen_4.2_Release_Notes To download tarballs: http://xen.org/download/index_4.2.0.html Or the Mercurial source repository (tag ''RELEASE-4.2.0''): http://xenbits.xen.org/hg/staging/xen-4.2-testing.hg And the announcement on the Xen blog: http://blog.xen.org/index.php/2012/09/17/xen-4-2-0-released/ Thanks to the many people who have contributed to this release! Regards, The Xen Team