First up, the bug-fixes involve an X crash about querying clock offsets, a performance regression when running KDE with desktop effects using OpenGL compositing, NVIDIA-Settings fix, an OpeNGL rendering corruption fix, a nvidia-installer crash fix, etc.
Exciting many Phoronix readers will be news that NVIDIA 337.25 supports X.Org Server 1.16, the new xorg-server update that will be released this summer. The July release of X.Org Server 1.16 integrates XWayland support, in-server GLAMOR, and many other changes. With 337.25, the new X.Org Server ABI is promptly supported by the NVIDIA binary blob while the AMD Catalyst driver doesn't yet support the new X.Org Server nor Linux kernel.
The newly-supported graphics cards are the GeForce GT 740 and GeForce GTX TITAN Z. The GeForce GTX TITAN Z has two unlocked GK110 GPU cores, 12GB of video memory, and costs a whopping $2,999 USD. The GeForce GT 740 meanwhile is a new low-end, Kepler graphics card. A lot of these new low-end but gaming capable GT 740 graphics cards just hit the market. We'll have our first Linux review of the GeForce GT 740 next week when reviewing an EVGA model.
More details on the NVIDIA 337.25 Linux graphics driver can be found via NVIDIA's DevTalk thread.