The new release provides high level coverage of the improvements and additions that have been implemented in Red Hat Enterprise Linux 5.4.
Changes include:
a. Package Updates
b. New Packages
c. Technology Previews
d. Fix Known Issues
e. Package Manifest
Some important Updates are:
1. Virtualization Updates
2. Clustering Updates
3. Networking Updates
4. Filesystems and Storage updates
5. Desktop Updates
6. Tools Updates
7. Architecture Specific Support
8. Kernel Updates
Official Release Notes:
http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html-single/Release_Notes/
Technical Notes can be read thru:
http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Technical_Notes/
Copyright belongs to Red Hat, Inc..