I have a build of xen-4.1.0-rc7 at
http://koji.fedoraproject.org/koji/taskinfo?taskID=2918588
which is expected to be the last release candidate with the final release
scheduled for Monday.
The 2.6.38 kernel has been released, and I have built a a dom0 version at
http://koji.fedoraproject.org/koji/taskinfo?taskID=2915320
Michael Young