Today, July 1, the first release of the candidate for the third KDE 4 branch has become available.

In the new version added:
1. Integration of new technologies, such as PolicyKit, as well as geolocation services.
2. New window animation effects, many new and improved add-ons in Plasma.
3. Bugfixes and improvements in many applications.
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A complete list of bug fixes, changes, improvements and innovations can be found
here .
You can download binary release candidate packages from this
list of mirrors .