Keith Packard, who is the release manager for the X Server 1.8 branch and in control of the X Server Git master branch for the next six months per this new release process, declared xorg-server 18.104.22.168 this morning. This first development snapshot has 137 changes from 28 different developers. While no major features have yet to be merged for X Server 1.8, some of the key changes in this first snapshot include fixed D-Trace support on Mac OS X, XSELinux and XACE updates, GLX 1.4 enabled on DRI2, many XQuartz changes, EXA fixes, and even a fix for the Hurd operating system.
The release announcement with source download links for this X Server 1.8 snapshot and the change-log can be found on the xorg mailing list.
The X Server 1.8 release schedule puts the official 1.8.0 version out in March of next year. Among the expected features are XKB2, improved EXA performance, X Input 2 updates, and other new features.