Well, would this fu...ng X11 foundation do its job right - providing a platform independend graphical users interface as they did in the great time of the UNIXes - their wouldn't be this backporting issue. The OSF blames the *BSD to being behind, the *BSDs blame the OSF for being Linux-nailed. It would be of great interest to figure out what's right and where the truth lies. Indicating that, for instance, the *BSDs are behind is KMS: it is said, that this technique is important to get rid of a root-driven Xorg server, and this should be of great concern even for the OpenBSD people. But there is not much efford to create a platform independend solution. So, at least OpenBSD is behind?
The long-awaited Intel KMS support for FreeBSD is quite exciting though it's a constant challenge of back-porting changes from the Linux kernel. There's also no official Radeon or Nouveau driver KMS/DRM drivers in FreeBSD.