Rejoice - it has been done - KDE 4.0.0 has been tagged ! :-)
Although I didn't touch any significant number of lines of C++ code of KDE for the 4.0.0 release, the last (almost exactly) 2 years since I brought CMake to KDE4 (together with the help of many other developers, especially Laurent Montel !) have been very busy, impressive, awesome, stressful, interesting, rewarding, exhausting, etc. for me.
I feel kind of relieved that it is now finally released (maybe the feeling is totally wrong and the stress now actually starts, we'll see).