From the KNew KDE dept.:
The KDE Project today announced the immediate availability of KDE 3.5.6, a maintenance release for the latest generation of the most advanced and powerful free desktop for GNU/Linux and other UNIXes. KDE now supports 65 languages, making it available to more people than most non-free software and can be easily extended to support others by communities who wish to contribute to the open source project.

This release includes a number of bugfixes for KHTML, Kate, the kicker, ksysguard and lots of other applications. Significant features include additional support for compiz as a window manager with kicker, session management browser tabs for Akregator, templating for KMail messages, and new summary menus for Kontact making it easier to work with your appointments and to-do's. Translations continue as well, with Galician translations nearly doubling to 78%.

kde.org