Red Hat Enterprise Linux minor releases are an aggregation of individual enhancement, security and bug fix errata. The Red Hat Enterprise Linux 6.4 Release Notes
documents the major changes made to the Red Hat Enterprise Linux 6 operating system and its accompanying applications for this minor release. Detailed notes on changes (that is, bugs fixed, enhancements added, and known issues found) in this minor release are available in the Technical Notes
. The Technical Notes document also contains a complete list of all currently available Technology Previews along with packages that provide them.