KDE an easy-to-use desktop environment for UNIX / Linux. KDE 4 is the next major release and it is scheduled for release on December 2007. The new version claims t make KDE faster and more memory efficient by leveraging the greater speed and efficiency of Qt 4.x and increased efficiency in the KDE libraries themselves. There is a nice review published by Korneliusz Jarzebsk:
KDE 4 is coming. It’s starting to look and behave mature enough to use it on a normal desktop. This article is a little introduction to what you might be expecting from the brand new KDE due later this year. It’s been a whole month when I’ve investigated the new environment called KDE 4. Honestly I wanted to wait till “Beta 3″, which should have appeared on 5th October. But as you all can see it has never happened. On the IRC channel #kde4-devel I was informed that the “Beta 3″ should have been tagged yesterday but unfortunately it didn’t turn out to be true. Not waiting any longer I made my mind and I have updated the SVN and have run the cmake.