Red Hat has announced the availability of RHEL 5.11. You can find more information on this here:
- Release Notes
- Technical Notes
- Kernel update page including a list of bug fixes
- kernel level: kernel-2.6.18-398.el5.
This update is the last update for the great RHEL 5 and the support will finally end in March 2017 (see life cycle page from Red Hat). Even though this seems to be far away right now, please mark your calendars for migration planning!
From a System z perspective this is a pure bug fix release. No new features have been added.