"KDE Project Ships Fourth Major Version of cutting edge Free Software Desktop
With the fourth major version, the KDE Community marks the beginning of the KDE 4 era.
January 11, 2008 (The INTERNET).
The KDE Community is thrilled to announce the immediate availability of KDE 4.0. This significant release marks both the end of the long and intensive development cycle leading up to KDE 4.0 and the beginning of the KDE 4 era."
It *does not* say anywhere that this is beta, testing, feedback release, whatever. There is no small print which we did not read. It announces with fanfare a major new version. No wonder people are tempted to try it, and then they get upset with it. They are right to do so.