Project Neon is a Kubuntu community project powered on Ubuntu's Launchpad to provide daily packages of the latest KDE Frameworks 5 state.
Those wishing to learn more about Project Neon or to try out the early KDE Frameworks 5 state can find details on the KDE blog. With the upcoming Kubuntu 13.10 release, KDE SC 4.11 is the default desktop environment.
There isn't a firm date yet when KDE developers hope to officially ship KDE Frameworks 5, but it's anticipated to arrive in 2014. KF5 will support the Qt5 tool-kit and will provide Wayland compatibility with Plasma Workspaces 2. Already the work on this next-generation KDE desktop stack is very impressive.