X.org 7.6 supports udev and modularized configuration
The X.org developers have released version X11R7.6 of their graphics system, which contains the X Server version 1.9.3. One of the innovations in 7.6 is that it uses udev for hardware detection and hot-plug notification; a HAL (Hardware Abstraction Layer) is no longer required.
Xorg configuration directories now allow the X Server configuration to be saved as individual module files. For instance, the input device driver matching rules previously provided in HAL .fdi files are now provided as InputClass sections in .conf files in /etc/X11/xorg.conf.d.