I have a favor to ask to those that are currently testing Gnome 3.14.
In gnome 3.12 I am having problems with user switching, which is quite important for me. In particular, I had this annoying bug  since I installed Gnome in this computer. When Xorg 1.16 came out, it broke completely the switch user functionality for me (it caused my system to hang, forcing me to send a SIGTERM with Alt+SysRq+e). For what it's worth, I created a /etc/X11/Xwrapper.config, but that did not solve the issue. At the time I didn't want to investigate the issue since I needed the system to Just Work(tm), and I simply downgraded Xorg. I'm still running with the old Xorg, but I know that I can't go on like this forever.
If anyone running Gnome 3.14 happened to test the switch user functionality, I would be interested to know: - if you are observing any problem switching user with Xorg 1.16, - if you are observing Bug #730360; to test, see 
Thanks in advance!