|This review covers the Workstation version of RHEL6...|
RHEL 6 also has a new security sandbox feature. A set of security enhanced Linux (SELinux) policies enables system administrators to run any application and test how untrusted content is processed without damaging the system. IPv6 support has also been added.
Although it might appear that RHEL 6 looks light on some applications when users just install the default desktop, the option to customise it with other packages gives access to a lot more functionality.
For example, users can also configure the system to dip into the Extra Packages for Enterprise Linux (EPEL) repository to dig out specific applications they might want to install.