The xorg-server 188.8.131.52 release happened on Friday as a step towards X.Org Server 1.15, which is now planned for an official release in December. X.Org Server 1.15 should have been here in September, but it was mostly just bug-fixes that landed and nothing too exciting. With the release pushed back there's now hope for DRI3 support, XWayland, the GLX rewrite, and other changes to land.
The X.Org Server 184.108.40.206 release doesn't yet offer up any exciting functionality but a couple dozen changes from the usual X.Org upstream developers. Some of Adam's GLX patches though have landed, a number of xephyr changes by Eric Anholt, various input changes by Peter Hutterer, etc.
The full list of X.Org Server 220.127.116.11 development changes can be found via the release announcement.