KDE 4.8 is released today which provides many new improvements and stability, performance updates. KDE have now more faster scalable file management and new touch friendly components are introduced in this KDE 4.8 release. More improvements include in Dolphin, Kate, Kmail, Gwenview, adaptive power management, multiple layouts available for the ALT + TAB window switcher and Kwin optimizations.
KDE desktop have beautiful looks, enables you to make your desktop as you wish and it have easy deployment.
You can easily install KDE 4.8 on your existing Kubuntu 11.10 installation through Kubuntu backports PPA. You can add this PPA through following commands.
sudo add-apt-repository ppa:kubuntu-ppa/backports sudo apt-get update sudo apt-get dist-upgrade
Oxygen GTK theme is yet not included in this version but you can install it through this alternative method but it is not recommended.