The good news, however, is that spinning off from a discussion on the X.Org mailing list is a bit of a time-frame. Oracle's Alan Coopersmith has written the following on the mailing list.
I'd like to get the RC out by the end of the week if we can - getting the libX11 doc build situation resolved so that we aren't breaking the build for many people has been the primary blocker (aside from general lack of time) - I can't think of any other major changes needed that aren't in git yet, though there's still a bunch of modules that need tarballs released from the latest git.
So hopefully we will see the X.Org 7.6 release candidate come out by the end of this coming week and the final release come shortly thereafter. Granted, with X.Org's current modular design, tagging X.Org 7.6 isn't as important as before with many distributions like Ubuntu 10.10 already shipping with the X.Org Server 1.9 and the updated display/input drivers and other X packages. Nevertheless, a year has already passed since X.Org 7.5, which came months late with X.Org Server 1.7.