Thanks to help from danimo, I've grabbed techbase's nice MediaWiki Oxygen web skin and turned it into a regular KDE web/news site skin in Poland (the result: kde.org.pl, dot article). What means that unlike on techbase, which is aimed at more collective editing, kde.org.pl has left hand menu as well wiki tools are accessible and visible only for logged-in users. So it is more like kde.org.
The editorial staff is not big so I used extensions like DynamicPageList so they can save time by inserting automatically generated list of pages of given type/subtype (either sorted alphabetically or by creation date), e.g. see Droga do KDE 4 (i.e. Road to KDE 4).
There are also
The final word is a note: if you want to run similar Oxygen-compatible KDE web site for your country, either by replacing the older one or starting a new one, let me know you want the templates and some mentoring. Most languages are supported. But remember you still need a few folks for editorial staff -- things won't happen automatically (translation, local articles, administration).