Comment 123 for bug 305301

Yes, to follow the development git is the place: http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/ and http://cgit.freedesktop.org/mesa/mesa/log/ or to see what the developers are discussing: IRC #radeon
For status on different features on cards, see http://wiki.x.org/wiki/RadeonFeature and other pages there.