In terms of actual Wayland adoption, Ubuntu developers may try again to have Wayland become the Ubuntu System Compositor for Ubuntu 13.04 in April, but I wouldn’t be surprised at all to see that delayed until Ubuntu 13.10 one year from now. Wayland is making nice progress and it’s becoming likely that it will succeed the X.Org Server on the modern Linux desktop, but there’s still much work ahead. Even the Wayland adoption within Fedora and the other more experimental / bleeding-edge Linux distributions has been slow.