I don’t often find myself getting overly excited about maintenance releases, however Red Hat Enterprise Virtualization 3.4.1 is an exception due to two key factors:
Preview support for Red Hat Enterprise Linux 7 as a hypervisor host
Support for up to 4,000 GB memory in a single virtual machine
http://redhatstackblog.redhat.com/2014/08/25/red-hat-enterprise-virtualization-3-4-1-released/