Adobe has released Lightroom 4.3 with support for 20 cameras and 42 lens profiles (including the iPhone 5) and fixes for a variety of bugs. Amongst the highlights, the professional photo cataloging and editing application fixes a problem with uploading to Flickr if the photo’s filename contained an apostrophe, ensures that Catalogs from Photoshop Elements 11 are updated, properly imports AVCHD video, fixes an issue where TIFF images could experience a tonal shift, and fixes a flickering problem with videos created on the iPhone 4. Additionally, Lightroom 4.3 now supports Retina displays when using either the Library or Develop modules. ($149 new, free update, 419 MB, release notes)
Expose Shortcut for View All Windows
In Expose mode in Snow Leopard, press the Tab key to view all windows belonging to one application (equivalent to pressing F10 or Control-F3 on recent laptops). Press Tab again to switch between applications while remaining in Expose. You can also click an icon in the dock.