Martin Gräßlin, the lead developer of KDE's KWin compositing window manager, has yet another interesting blog post that's worth reading. The blog post details a "rather historic event" for KDE, X11, and Wayland.
From Martin's blog post, "This is not just the Desktop Grid effect. The gears window you can see on each of the desktops is a Wayland client, all other windows are X clients. For me this is a rather historic event, not just for KDE but also and especially for Wayland. Up to now there have only been the demo compositor and the QtCompositor as Wayland Compositors. They are more or less just proof of concept. But this is different event: we have here a normal X11 window manager and are able to integrate Wayland clients into the compositing scene just as if it were an X client. This is not a Wayland compositor, it is a X compositor with an implemented Wayland Server component."
his KDE-Wayland news. It will still be a while before we see more of Wayland, but this is a big step forward. If you missed it, MeeGo Tablet may use Wayland this year