But now is when the RHEL6 beta is released. Not composed, *released*. There is a chance my RHEL6 final there will be changes to the package list and version, its also possible there isn't.
Again this isn't a Fedora or Ubuntu, a major amount of stabilisation work has gone into this already. You can't just shove major revisions of apps in the week before beta release. I think you seriously underestimate the amount of work that goes into this prior to the actual beta release. Its not a just a bunch of maintainers chucking shit at a packaging system and hoping it produces a coherent OS. Like I'll guarantee you can say the exact same things about RHEL6 when it finalises, in that there will of course be newer versions of all those components than it ships with, but that isn't what the RHEL OS is aimed at. Its aimed at people who don't care about constant version revisions, they want a stablised version with lots of bug fixes only, not new themes or applets or whatever KDE4.x+1 might drag in along with the bug fixes.