All three add support for Raw files from five new cameras manufactured by Nikon, Olympus and Panasonic. The new releases of Lightroom and Camera Raw also include a couple of bug fixes. In full, the list of newly supported cameras in Adobe Photoshop Lightroom 2.5, Adobe Camera Raw 5.5 and Adobe DNG Converter 5.5 is as follows:
In addition, Adobe Camera Raw 5.5 corrects an issue with the Bayer demosaicing algorithms when working with certain Olympus, Panasonic and Sony cameras that exhibited an unequal green-channel response. According to Adobe, the corrected algorithm offers "a subtle visual improvement" when processing Raw files from these cameras.
Lightroom 2.5 includes the demosaic algorithm change, as well as one further bug fix for Windows users. The previous version of Lightroom on Windows didn't honor the "Show import dialog when a memory card is detected." setting, and this has now been corrected in the new release.
The updates themselves as well as release notes and information on how to upgrade can be found on the Adobe website:
For Windows systems:
For Macintosh systems: