Adobe has published the beta version of Photoshop Lightroom 3, you can get it over here.
Lightroom 3 beta builds on the vision of the very first Lightroom beta. From day 1, Lightroom was designed for photographers and by photographers to help them focus on what they love—the art and craft of photography. Lightroom provides photographers with an elegant and efficient way to work with their growing digital image collections, bring out the best in their images, and make an impact from raw capture to creative output, all while maintaining the highest possible quality each step of the way.
We're offering a public beta of the next release of Lightroom to give you a chance to preview some of the new features and enhancements in the upcoming version. It's an opportunity for you to evaluate a select portion of the new features planned for Lightroom 3, to help the team discover and address issues if any, and to send feedback that the Lightroom team can use to make Lightroom 3 an even better digital darkroom and more efficient assistant for you.
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For the development of this latest release, we’ve focused on what we believe are the fundamental priorities of our customers: performance and image quality. Lightroom has been rebuilt from its core to provide a performance architecture that meets the needs of photographers today and into the future. The raw processing engine has also received an overhaul in order to ensure that you’re maximizing the potential in your images in terms of sharpening and noise reduction. And, a number of other new areas have also had new features added and enhanced. Like any beta, Lightroom 3 beta is unfinished, which means some of the features we have planned are not in this release, and some of the features in the beta are not yet complete.