For those not familiar with the "GLX rewrite" for the X.Org Server, see The X.Org Server's GLX Is Being Rewritten. This rewrite has largely been the work of Adam Jackson at Red Hat. The revised GLX code was published one week ago and then merged today.
With removing duplicated GLX implementations, there's only three thousand lines of new code while dropping over 41 thousand lines of code from the xorg-server. The X.Org Server now expects to just be linked against the GL API. Here's the commit making the major X.Org Server GLX changes for the 1.15 release that should be released as stable around the end of the calendar year.