X.org is an evolution from the XFree86 project, that became the widely accepted "reference" implementation in 2004. X.org improves upon XFree86 in terms of the way the project is coordinated, the way the codebase is organised and the approach to graphics acceleration.
The X.org team is hard at work on a new Acceleration Architecture, as well as the inclusion of a variety of exciting new X features such as window composition (which allows for sexy transparency effects).
Project group information
All bugs Latest bugs reported
Bug #1610591: Video acceleration regression for Radeon Xpress 200M (r300) in xorg-lts-xenial & xorg-lts-wily
Reported on 2016-08-31
Bug #1615871: Poor performance with WebKit on yakkety with Intel modesetting enabled
Reported on 2016-08-23
Bug #1580123: xrandr --scale (again) confines mouse to native solution
Reported on 2016-08-11
Bug #1440891: xbacklight doesn'twork with modesetting driver
Reported on 2016-08-01
Bug #1607891: X doesn't start with r128 driver (PowerMac 3,1) [powerpc]
Reported on 2016-07-29