Phoronix: X Server 1.11 Breaks The Video Driver ABI

While not exactly uncommon for a major X.Org Server update, the video driver ABI for the DDX drivers will break with the forthcoming xorg-server 1.11 release. This means that for those using the proprietary graphics drivers, namely the AMD Catalyst driver, you may be stuck waiting a couple of months for support...

http://www.phoronix.com/vr.php?view=OTQ3NA