The GeForce GTX 780 is based upon the GK110 core and boasts 2304 CUDA cortes, an 863MHz base clock, 900MHz boost clock, and 3GB of video memory. The GeForce GTX 780 is positioned between the GeForce GTX 680 and GeForce GTX TITAN and will carry a price-tag of $650 USD.
While a Linux review of this new graphics card is unlikely, at least there's binary Linux driver support from the start for this Kepler-based GPU with the 319.23 release. More details on the GeForce GTX 780 hardware can be found at GeForce.com.
Other NVIDIA 319.23 Linux graphics driver changes include an NV-CONTROL extension fix for multi-GPU systems, and a couple of other bug-fixes concerning VBOs and GTK+ and RandR panning. There's also now support for HDMI 4K resolutions on Kepler and newer GPUs. VDPAU is also now supported for 4K resolutions with MPEG-1/2 and H.264 video formats.
More details on the NVIDIA 319.23 Linux graphics driver changes can be found via the release information at NVIDIA.com.