I not 100% sure myself, but I caught a few (last year) threads here and on the INTERNET that said INTEL drop support for a certain kind of open-source driver that AMD users needed. It seems that it brought a halt to FreeBSD/PcBSD future support for GNOME-3. I hope I was not completely off track ... as usual.
http://forums.pcbsd.org/showthread.php?t=14493
over look what I be be saying. I be googling BSD and programming like 20/7 sometimes, I be needing sleep