KDE 4.0 was officially released last week after extensive development. The long-awaited 4.0 release ushers in a new era for the popular open-source desktop environment and adds many intriguing new features and technologies. Unfortunately, the release comes with almost as many new bugs as it does features, and there is much work to be done before it sparkles like the 3.5.x series.
KDE 4 is largely built with Qt 4, the latest version of Trolltech's commercial open-source development platform. Qt 4 brings significant performance improvements to KDE and offers a lot of really sophisticated new features for developers, like the Arthur painting framework and Scribe text layout system.