The evolution of OpenStack is analogous to Linux. Linux is basically a kernel, no more, no less. You need a series of tools around it to make it useful. The kernel with the proper tools overtime became "distributions". OpenStack is undergoing the same process. RedHat just announced their own OpenStack distribution, and several others like Canonical (Ubuntu), Nebula, StackOps, Piston, Rackspace, etc, they all have their own distributions of OpenStack. They are all trying to make "easy" the installation and customization process. Some of them tend to be more enterprise-centric and other ones tend to be more service provider-centric.
Since I'm part of the OpenStack team of one of the corporate members of the OpenStack Foundation, I've had the chance to explore many of them, and I'm most impressed by StackOps which seems to be the most flexible of all so far, although Ubuntu with Jujus is not far behind, specially if you enjoy the command line.
Overall, I see a huge momentum in the OpenStack community and the potential is there to create a true API glue that can finally unite all software components, from proprietary to open source under a single IaaS framework.