On January 10th Adobe released a beta version of it's newest version of Lightroom to the public. The new version is version 4 and it's available for both the Macintosh and Windows. It's important to note that this is a BETA which means that it's not a final shipping product. It also means that the catalogs that you create might not be available for you to use once the final shipping version is release. Adobe has NOT released a shipping date for the final version of Lightroom 4. The beta, should you decide to download and use was designed for you to test and experiment with some of the new features found in this beta release. Any problems that you encounter with this beta should be reported to Adobe. Instructions for providing feedback are contained in the download link below.
Do not use this program for any of your original work as this is a beta and damage may occur to your images and catalog. Use a copy of your images and test catalogs that you create in this beta version.
Get the Adobe Lightroom 4 Beta by Clicking Here