In a press statement AMD announced better support for Linux in the future, and "also plans to accelerate efforts to address the needs of the open source community as well". The question is just, what are those efforts? At LWN a declaration to this statement is made, and announces AMD reported at the Kernel Summit, that they will open the graphic specs for their graphic processors from the R500 forward.
Well, if this is true then it's really good news, and just another great move toward full 3D for Linux.
Edit: The speculations about AMD's strategy about their obscure open source effort is finished, and gave a detailed statement, but in short: "AMD will be providing NDA specifications, an open-source library, and there is a new open-source graphics driver as a result."