That information is a boon to all third parties developing drivers for AMD hardware, and now one of the first drivers as a result of this spec being released has surfaced. Novell has been developing the driver, and intends to keep the driver open for anyone to use.
The driver is just an alpha it stands now – not really suitable for day to day use. However, it's still exciting – for the longest time, ATI's drivers, both on the Windows and Linux side, have held a reputation of being shoddy in comparison to Nvidia. I don't think AMD should be relying on third parties to create drivers for them, but this does show a considerable change in attitude and policy regarding their hardware. I hope this continues.