Available for both Mac and Windows, the updates adds new camera support for the following models according to a blog post by Photoshop senior product manager, Jack Nack.
Canon EOS 7D
Canon PowerShot G11
Canon PowerShot S90
Leaf Aptus II 5
Mamiya DM22, DM28, DM33, DM56, M18, M22, M31
According to the Adobe release notes the Camera Raw 5.6 and Lightroom 2.6 updates provides 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 according to Adobe's notes.
The updates also include improved camera profiles for the Leica M9 and Ricoh GXR.
Adobe adds, 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," Adobe adds.