Datschge pointed me at some interesting work by Rohit "kol" Kaul on KDE-Look.org. Complementing the recent efforts at KDE'fying OpenOffice.org is an icon theme generator as well as an accompanying static theme. The screenshots are very interesting, if anything. In addition, kol has done the same work on Evolution in a nice little showdown with Kontact. Also, who needs Keramikzilla when we got Konqueror? But there you go... we got it all. By the way, you might want to browse a few more screenshots of Sodipodi flaunting KDE integration -- some Karbon shots in there too. The pieces of the integration and assimilation puzzle are falling into place quite nicely!
Finally, the news you have all been waiting for: KDE 3.3 will feature a brand new and long-awaited theme manager. Lukas Tinkl has a nice little preview page complete with screenshots and an initial version 0.1 available for download.
Your suggestions and input are crucial, since Lukas is looking forward to adding new features to the KDE Theme Manager while aiming to keep the UI as simple as possible. Also note that this is a completely new take on the quick-and-dirty legacy theme manager that was present in KDE 2.x and therefore does not preserve backwards compatibility.