Well, with Qt5 there will be a new lighthouse plugin of course.
For distributions switching to wayland: There would be the need of a WM (KWin, OpenBox etc.).
But KDE is focussing on the platform2/KDE5 (for now), which will enable KWin to get "Lighter", or rid of many KDE dependencies. Martin said he'll focus on wayland lateron again.
So until one of the necessary WMs is ported, there is no chance for a distribution featuring Wayland as their "main" display server. If that happened, it should be possible to port Razor-Qt, which will once again need some time too

.