Mir is only planned for 14.10. They were planning Xmir for 13.10, but that has been delayed until 14.04. I think they're underestimating the amount of work that

Mir is only planned for 14.10. They were planning Xmir for 13.10, but that has been delayed until 14.04. I think they're underestimating the amount of work that is needed for a pure Mir environment (without X handling everything via Xmir). A lot in Mir is pretty similar as in Wayland. I don't see how they'll offer the same features as X has without Xmir quicker than Wayland. Look at the amount of missing things in the GNOME Wayland technical preview. Adding an additional layer on top of X is one thing, but replacing X means a lot of work. Latest thing is getting accessibility right, which GNOME is working upon.