AMD's HD 6950 is unlockable; 69XX series has dual bios -- good news for open source
AMD's HD 6950 is unlockable
This should be good for open source development, for those who want a completely 'free' solution for graphics acceleration.
AMD even made the process a bit easier as AMD included the dual-BIOS feature on its HD 6900 series cards and if something goes wrong you can always go for the recovery/factory protected BIOS.
Here is a video of how to unlock the card: