Overall product features
? Revolutionary new features, a fluid user experience, and improved access to the unrivaled power of Photoshop
? A more intuitive user interface and new nondestructive editing features that put you in control, including the new Adjustments and Masks panels
? New and revolutionary Content-Aware Scaling, advanced auto-blending that extends depth of field, and industry-leading editing and compositing with reengineered color-correction tools
? Significant productivity enhancements that provide increased flexibility and enable you to leverage the power of today's faster graphics processors
? Breakthrough 3D editing and compositing capabilities and improved video controls to dramatically expand your creative options
? Comprehensive image analysis with enhanced measurement and counting tools, as well as support for DICOM images and MATLAB processing routines
Unrivaled editing
? Adjustments panel for live, nondestructive image adjustment
? Masks panel for creating editable, feathered, density-controlled masks
? Content-Aware Scaling
? Enhanced auto-blending of images
? Enhanced auto-alignment of layers
? 360-degree panoramas
? Extended depth of field
? Better raw image processing
? Enhanced expert retouching
Increased productivity
? Smoother panning and zooming and fluid canvas rotation
? Industry-leading color correction with reengineered Dodge, Burn, and Sponge
? Efficient file management with new Adobe Bridge CS4
? Tighter integration with Adobe Photoshop Lightroom?
? Adobe Kuler? for color harmony creation and sharing
? N-up and multiple document view
? More powerful printing options
? Superior performance on very large images
? Multi-Touch support on Mac laptops
? Adobe Community Help
Breakthrough 3D, motion graphics, and image analysis
? Direct painting on 3D objects
? Easy conversion from 2D to 3D
? Editable 3D properties (scene, materials, meshes, lights)
? High-quality output with new ray-tracing rendering engine
? 2D and 3D image compositing
? 3D object animation
? 3D/video support
? New, high-performance, nonmodal 3D engine
? Volume rendering
? Single-key shortcuts for editing motion graphics
? Preview and export of audio content and frame comments
? Quantitative data extraction
? Enhanced Count tool

Homepage
http://adobe.com/products/photoshopextended.html