Last week was the main set of Nouveau DRM driver changes
for the Linux 3.13, which included new power management and re-clocking code for this open-source NVIDIA driver. Prior to David Airlie sending in the DRM pull request a few hours ago, a few more Nouveau changes were merged.
The second Nouveau DRM pull for the Linux 3.13 kernel is mostly bug-fixes over the big update in the first round that enables fan management by default and begins tackling Fermi/Kepler GPU re-clocking. The only notable change with this second pull is page-flipping fixes that lead to the Nouveau driver finally supports it to be synced to vblanks except in cases where they're asynchronous page flips.
More details on the last minute changes can be found with this last minute merge