Christian König sent in this latest pull request and it contains a rework for finding the right PLL numbers for displays and a couple of bug-fixes. These relatively mundane open-source AMD Radeon Linux graphics driver changes can be found via the pull request message.
Going back weeks have already been earlier Radeon DRM updates for Linux 3.15. One of the big open-source Radeon changes for this next Linux kernel version is VCE video encoding support.
Look for the full DRM pull request for merging into Linux 3.15 mainline to happen in the coming days.