The first beta of KDE 4.7 has been released. Here the announcement:
Today, KDE has released a first beta of the upcoming 4.7
release of the Plasma Desktop and Netbook workspaces, the KDE Applications
and the KDE Frameworks, which is planned for July 27, 2011. With API,
dependency and feature freezes in place, the KDE team's focus is now on
fixing bugs and further polishing new and old functionality.
The 4.7 release will bring a number of exciting improvments:
* KWin, Plasma's window manager now supports OpenGL-ES 2.0, improving
performance and deployability on mobile devices
* Dolphin, KDE's flexible file manager has seen user interface improvements
and now sports a better user experience for searching in files' metadata.
* KDM, KDE's login manager now interfaces with the Grub2 bootloader
* Marble, the virtual globe now supports offline address search, especially
making its mobile version more useful on the road
To download source code or packages to install go to the 4.7 Beta1 Info Page.
The changelog lists more, but not all improvements since 4.6.2.
More info: http://www.kde.org/announcements/announce-4.7-beta1.php