It's abandonware. None of the grown-ups in the Linux graphics space are interested in maintaining it beyond the minimum necessary. I suppose new features could be added to Xorg, but anyone who actually knows something about the graphics pipeline is 100% committed to Wayland, so it won't be done.
And Enrico's code was apparently so shitty and disruptive he's earned himself a ban from Freedesktop.org. Or is that because he associated himself with Lunduke?