Phoronix posted a news story that AMD has released open source graphics driver support for their Radeon HD 6000 series

On the same day that we learn VIA's Linux support is basically dead and after a troubling week for Intel with regards to open-source graphics support for their new Sandy Bridge CPUs, Advanced Micro Devices has come forward and released open-source graphics driver support for their AMD Radeon HD 6000 series of graphics cards.

  AMD Releases Radeon HD 6000 Series Open-Source Support