As noted in our forums, Apple's latest OS X 10.8.3 beta seeded to developers as build 12D76 yesterday contains new drivers for NVIDIA's high-end Quadro K5000 graphics card. NVIDIA announced the K5000 for the Mac Pro last September, but has yet to actually release the product. The first developer build of OS X 10.8.3 seeded last November added AMD Radeon 7000-series drivers, so it appears that the public r
