X.Org Server 1.16 Delayed To Let In Non-PCI Graphics Support
X.Org Server 1.16 has been delayed. However, it's not been delayed like in some of the more notorious past releases due to outstanding bugs, etc, but over letting in a late feature to this latest revision of the X11 server.
There was a lot of developer interest and pressure to let non-PCI device support get merged for the 1.16 stable release. This non-PCI support is needed for allowing the NVIDIA Tegra (open-source) graphics driver to work properly in an easy manner since it's not exposed as a PCI VGA device. Thierry Reding at NVIDIA along with support from other developers worked out adding this non-PCI graphics support on the X.Org Server side.