I'm currently testing the RH5 release as we speak. I have to say this has to be one of there strongest releases yet (Network Admins are going to love this). One major difference your all going to notice is the install has changed alot, and the number of packages included in this release (Each package can contain up to 50 sub packages) It probably takes 10 or so minutes just to select all of them. Honestly the GUI hasnt changed much from RH4 or RH3 and I have yet to try out any of the cluster stuff or ISCI, Alot of developer tools in this release! I have to give props to RH on this release!