Hello Linux Geeksters. As you may know, KDE Plasma 5 has been released a while ago, coming with new applications and a redesigned interface, among others.
Also, the latest update of the Plasma 5 and KDE Frameworks 5 adds experimental Wayland support to the already existing X11/X.org Server support. The KDE Frameworks 5 does not have hardcoded support for X.org anymore, while many of the KDE 5 apps are developed in Qt 5.3, which is Wayland compatible.
So, the same binary can run under either Wayland and X.org. See the video of KDE running on Weston, the Wayland compositor, below:
Making KDE Wayland compatible is important, due to the fact that Ubuntu will also ditch the X.org server and adopt Mir, which is another alternative for X11, similar to Wayland (and so, KDE 5 should also work with Mir).
If you don’t have KDE Plasma 5 on your system, follow the instructions in THIS article, to install KDE Plasma 5 on Kubuntu 14.04 and Kubuntu 14.10.
Also, to make your KDE 4 desktop look like KDE 5, follow the instructions HERE.