For AMD Radeon customers using the open-source Linux graphics driver, the Linux 3.11 kernel is going to be mega exciting! Alex Deucher of AMD posted a set of 165 kernel patches today. Most notably, there's finally Dynamic Power Management (DPM) support for R600 GPUs up through Southern Islands hardware! Yes, there's finally dynamic power management in the open-source driver. Additionally, there's initial support for AMD "Sea Islands" hardware and there's also ASPM (Active State Power Management) support.
complete patch set summary can be viewed here
It's nice that the open driver from AMD is getting some love unlike Nvidia's almost passive aggressive refusal to work with anyone or do like AMD and hire developers to work on the open driver.