there is no kde5
…and in retrospect, adding to the confusion, there is not even a KDE4. *cue puzzled faces*
Let me explain this. About 1.5 years ago, we’ve repositioned the brand “KDE” to reflect how our community is structured. In short, KDE is the community (unversioned ), the workspaces are called Plasma Desktop, Plasma Netbook, etc. Then we have the KDE development platform. In the future we will be referring to these as the KDE Frameworks, since that communicates more accurately the results of the ongoing process of modularisation. And then we have of course the KDE Applications, which all have their own names or brands.
In essence, this means there is no KDE 5, and there will never be.