As luck would have it, AMD has since developed an open-source strategy with the RadeonHD driver and delivering NDA-free documentation. Most recently, Intel has openly released their 965/G35 documentation that even covers their 3D IGP blocks and complements their long-standing open-source display driver (xf86-video-intel).
Chris DiBona was scheduled to attend and speak at the KDE 4.0 release event, but he was unable to do so because of a business trip. We had hoped to ask him at the event what he thought of AMD's open-source embracement but as a result of him being away we were unable to do so. However, after the Intel 965/G35 announcement last week, we followed up with him to see if he had any comments on this recent open-source activity. Below is his concise response.
Yeah, I think it is pretty great that they're going down this road. I hope nvidia does this too. Saves no end of trouble.
Many are looking forward to an open-source NVIDIA, which will hopefully come true sooner rather than later.