"With RHEL 6.x now in market, I would have guessed that RHEL 5
at this point would be just be about bug, stability and driver
updates, but that's not the case. Red Hat is still adding FEATURES
to this distro.
"In RHEL 5.7, which is now in Beta, Red Hat is adding support
for OpenSCAP which is a big win for security. OpenSCAP is an open
source implementation of the Security Content Automation Protocol
(SCAP) framework for creating a standardized approach for
maintaining secure systems."