The KDE Project today announced the immediate availability of KDE 3.5.7, 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.
All Linux users who also happen to be KDE users can go grab the latest version off the official website. Not too much is new, but security fixes are of concern to all users.
Source: KDE.org