Continuing a successful tradition started with the first version in 2006, Adobe has released a free public beta of Photoshop Lightroom 4. Version 4 of the professional photo cataloging and editing application adds a new map module for tracking geotagged photos, enhances its support for video files, and incorporates a photo book creation tool. On the editing front, basic adjustments have been simplified, highlight and shadow recovery tools are improved, and a soft proofing feature is now incorporated. The Lightroom 4 public beta is free to use and will expire on 31 March 2012. Note that it won’t convert existing Lightroom catalogs (you don’t want to throw an existing photo library at beta software anyway). (Free during the beta period, 430.3 MB)