The latest version of KDE can be downloaded from Softpedia
The KDE Project just announced the immediate availability for download of KDE Software Compilation 4.11 Beta 2.The beta version of the new Workspaces, Applications, and Development Platform are now available for testing.
Highlights of KDE 4.11 Beta 2:
• Qt Quick has been improved in Plasma Workspaces;
• The Nepomuk semantic engine has received further optimizations;
• Kontact has been improved and has received a new theme editor for email headers;
• Initial experimental support for Wayland was added to Kwin and the developers say that other OpenGL improvements are on their way.
Check out the official announcement for a complete list of changes and improvements.
Download the KDE 4.11 Beta 2 sources right now from Softpedia. Remember that this is a beta version and it should NOT be installed on production machines. It is intended for testing purposes only.