1) Camera Raw 5.6 and Lightroom 2.6 provide a fix for an issue affecting PowerPC customers using the final Lightroom 2.5, Camera Raw 5.5 and DNG Converter 5.5 updates on the Mac. The issue, introduced in the demosaic change to address sensors with unequal green response, has the potential to create artifacts in highlight areas when processing raw files from Sony, Olympus, Panasonic and various medium format digital camera backs.
2) The Lightroom 3 beta has not been updated with this new camera support. If you’re working with one of these newer cameras and the Lightroom 3 beta, please use the DNG Converter 5.6 to convert proprietary formats to DNG files that can be used in the Lightroom 3 beta.
3) This release includes improved camera profiles for the Leica M9 and Ricoh GXR.