Features and Enhancements:

Local Adjustments (Local adjustment of saturation and clarity; Invert local adjustments mask; Copy local adjustments mask from other layer) Auto sync of XMP metadata (sidecars only).
Additional camera controls for Canon and Nikon
Improved OpenCL and 64 bit performance

Camera Support:

Samsung NX5, NX10, NX11 and NX100
Fuji X100
Ricoh GR DIGITAL, GR DIGITAL II, GR DIGITAL III, GX100, GX200, GRX S10, GXR P10, GXR A12
Phase One IQ180, IQ160, and IQ140
Canon EOS-600D/Rebel T3i and EOS-1100D/Rebel T3 including tethered support
Panasonic DMC-GH2 and DMC-GF2.
Sony SLT-A55, SLT A33, NEX-3 and NEX-5
Nikon D-7000 tethered support

System requirements:

Intel-based Mac
2 GB RAM
10 GB HDD
Mac OS X 10.6, 10.5.8 or later

Capture One Pro 6 has a world leading image processing engine with a fast and intuitive toolset that professional photographers use to achieve world-class image quality. It contains all the essential tools and high-end performance in one package to enable you to capture, organize, edit, share and print images in a fast, flexible and efficient workflow. Capture One Pro 6?s powerful and intuitive toolset is used by professional photographers to achieve world-class image quality with excellent color and detail. More info available @ homepage, also dont forget to read about new features (here).