All three updates add support for the same list of new camera models. The Lightroom 2.7 RC also increases the cache size limit to 200GB, and fixes a bug with slideshow playback that could cause program or operating system crashes. Camera Raw 5.7 includes a new demosaicing algorithm compatible with settings applied in the Lightroom 3 beta
Both Windows and Mac users receive new support for Raw files from seven manufacturers - Canon, Kodak, Leaf, Mamiya, Olympus, Panasonic, and Sony. The full list of newly supported cameras is as follows:
For more details, visit the Lightroom 2.7 RC and Camera Raw 5.7 RC / DNG Converter 5.7 RCpages on Adobe Labs.