Apple released Digital Camera Raw Compatibility Update 3.12 on Friday, adding support for the Canon EOS 5D Mark III camera to iPhoto ‘11 and Aperture 3.
The support article link for the update points to Apple’s Digital Camera Raw 3.11 update, so additional details aren’t available. Since the 3.11 update required OS X 10.6.8 or 10.7.1 or higher, it’s likely the 3.12 update does as well.
Digital Camera Raw Compatibility Update 3.12 is available as a free download via Apple’s Software Update application.