Red Hat Enterprise Linux 6.5 now Generally Available (adds Docker support)
So, yeah, it was in beta testing, but now it's generally available! See the recent Red Hat press release . If you use virtualization in your development (e.g. spinning up VMs for projects), you might find the ability to change proc counts while the guest is running useful. RHEL 6.5 virtualization also adds direct integration with GlusterFS / Red Hat Storage in case you want to play with that in a virtualized test environment. Dynamic storage is definitely getting interesting...