RHEL 5.5 - extra lube for your KVMs
CentOS for grown ups
The bottom line
So what did I make of the RHEL 5.5 beta? I found it to be, well, quite nice. It was my first exposure to RHEL directly, though I'm familiar with CentOS, and indeed, aside from the prominent Red Hat branding, things looked and behaved much like CentOS.
If you'd like to upgrade CentOS or the others mentioned here now, you can grab the kernel, but you'll have to wait for some of the other new tools.
As for RHAT itself, there's not final date yet. The beta is scheduled to run through March 16, 2010, and I expect final code to be available near the end of March.
Ahead of that release, I'd say the beta provides a solid update for RHEL. The new KVM tools and additional device support will make RHEL 5.5 well worth the upgrade when the final release does arrive later this year. ®