The KDE Community is happy to announce the immediate availability of the first alpha release of the KDE Desktop Environment, version 4.0. This release is a basis for the integration of powerful new technologies that will be included in KDE 4.
Highlights of KDE 4.0 Alpha 1 are:
* A new visual appearance through Oxygen
* New frameworks to build applications with, providing vastly improved hardware and multimedia integration (through Solid and Phonon), spelling and grammar checking, to name just a few
* New applications that focus on a smooth user experience, such as Dolphin, the file manager, and Okular, the document viewer
More Here .