As usual there are the release notes and the technical notes
in two separate documents. The complete documentation can be reached from the Red Hat documentation page (you need to select “6” on the left bar).
For System z this has been a mainly a fix
release. Only a few small enhancements have been added all described in
the technical notes. Here are some of them:
The IBM documentation for RHEL 6.4 on developerworks still applies for this release.