The updates add raw file support for nine new popular camera models, including the Canon EOS 550D, Sony A450 and Olympus E-PL1. The term "release candidate" indicates the updates are well tested but would benefit from additional community testing. Adobe encourages photographers to try out the newly added raw file support in this update and provide the product team with feedback so they can create the highest quality experience for customers working on a variety of hardware and software configurations.

Photoshop Lightroom software is a digital photography workflow solution, allowing photographers to import, process, manage and showcase images. The Photoshop Camera Raw plug-in provides access within Photoshop to the raw image formats produced by many leading digital cameras. Adobe's Digital Negative (DNG) format is a publicly available archival format for the raw files generated by digital cameras.  

The Lightroom 2.7 Release Candidate is available as a free download for Lightroom 2 customers here: http://labs.adobe.com/wiki/index.php/Lightroom_2.7 . The Photoshop Camera Raw 5.7 Release Candidate is available as a free download for Photoshop CS4 customers here: http://labs.adobe.com/wiki/index.php/Camera_Raw_5.7 . The DNG Converter 5.7 Release Candidate is also available as a free download for all customers. Feedback can be provided on the Adobe User to User forum (http://forums.adobe.com).