Although KDE 4.6.0 was released nearly two weeks ago, I had not yet gotten around to announcing the availability of KDE 4.6.0 packages for OpenSolaris / OpenIndiana. The KDE4-OpenSolaris team (mostly Jan and Pavel right now, since I'm distracted) are really on the ball and the packages went up on release day. You can find them in our pkg repository and the corresponding specfile repository.
[[ Shout outs to other packages: Gökmen, wow. That's slick. If I was going to be anywhere near FOSDEM, I'd line up behind Jos in congratulating you on a nice release. ]]