The new KDE website redesign is due any day now (with the release of KDE SC 4.4) and when it’s released you will be able to see how ideas were amalgamated from many different mockups and some which I’ve not had the records to post. The final design is different, much more aligned with the KDE "Air" branding, and most importantly a shared effort, like what open-source is meant to be. So don’t be too shocked if what is released is completely different.
Check out the latest mockup update here.
Past mockups viewable in full on my WIPUP profile.