I've created an SCAP Security Guide RPM yum repository off fedorahosted.org. Moving forward official RPMs will be housed here.

To enable the repository:
$ wget -O /etc/yum.repos.d/epel-6-scap-security-guide.repo http://repos.fedorapeople.org/repos/scap-security-guide/epel-6-scap-security-guide.repo

To download the latest content:
$ sudo sh -c "yum install scap-security-guide"

v0.1-8 is now available in the repository. This minor update reflects copy editing patches, and does not contain any OVAL updates.