This is the first maintenance release in the KDE4 series and fixes many issues in the initial release, including significant changes to the Konqueror web browser. These changes include stability bugfixes and performance improvements and its Flash integration as well as its JavaScript support.
KWin, the window manager, has received improvements to compositing and error handling. Almost all other KDE modules have been worked on extensively as well.
KDE 4.0.1 remains hard-masked because it still lacks KDE 3.5's
polish. If you want to try it out, follow our