The KDE community has made available first beta packages of the 4.6 series of the Plasma workspaces, the KDE applications and frameworks. All components add exciting new features making the stack more suitable for use on mobile devices, leveraging Nepomuk as the search infrastructure in the UI, and moving away from HAL as hardware abstraction layer.
Source packages are available on ftp.kde.org, but most likely your distributor of choice will have created easy-to-install packages by now.
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