Daniel Stone has updated the XWayland
patches for supporting X.Org/X11 applications on Wayland.
The updated patches are highlighted in this mailing list post
and includes patches for X.Org Server 1.12, 1.13, and the Git master. The updated patches make XWayland compatible with last month's Wayland 1.0
XWayland will likely be merged for the X.Org Server 1.14 release that's due in March