Add, adjust, and remove filters from an image without having to resave the image or start over to preserve quality. Nondestructive Smart Filters allow you to visualize changes without altering original pixel data.
Quick Selection and Refine Edge tools
Make selections in a snap. Loosely draw on an image area, and the Quick Selection tool automatically completes the selection for you. Then fine-tune your selections with the Refine Edge tool.
Create more accurate composites by automatically aligning multiple Photoshop layers or images based on similar content. The Auto-align Layers command quickly analyzes details and moves, rotates, or warps layers to align them perfectly, and the Auto-blend Layers command blends the color and shading to create a smooth, editable result.
Streamlined interface and palette management
Maximize screen space for editing while keeping essential tools accessible. Palettes are now arranged in convenient, self-adjusting docks that can be widened to full size or narrowed to icons or even a thin, self-revealing strip at the edge of your monitor.
Better raw image processing
Process raw images with increased speed and superior conversion quality using the Adobe Photoshop Camera Raw plug-in, which now adds support for JPEG and TIFF formats; new tools including Fill Light and Dust Busting; compatibility with Adobe Photoshop Lightroom™ software; and support for over 150 camera models.
Faster, more flexible asset management with Adobe Bridge CS3
Organize and manage images more efficiently with Adobe Bridge CS3, which now delivers improved performance, a Filter panel for easier searching, the ability to group multiple images under a single thumbnail, the Loupe tool, offline image browsing, and more.
sorry this link dead, you can search other photoshop post in this blog.