a Brief History of Photoshop

0.63 Macintosh October 1988

1.0 Macintosh February 1990

2.0 Macintosh June 1991

2.5 Macintosh November 1992

3.0 Macintosh September 1994
(Ted's first Photoshop Experience)

4.0 Macintosh, Windows November 1996
* Adjustment Layers
* Actions (macros)

5.0 Macintosh, Windows May 1998
* Editable type (previously, type was rasterized as soon as it was added)
* Multiple Undo (History Palette)
* Color Management
* Magnetic Lasso

5.5 Macintosh, Windows February 1999
* Bundled with ImageReady
* Save for Web
* Extract

6.0 Macintosh, Windows September 2000
* Vector Shapes
* Updated User Interface
* "Liquify" filter
* Layer styles/Blending Options dialog
(Color Management actually starts working)

7.0 Mac OS 'Classic'/Mac OS X, Windows March 2002
* Made text fully vector
* Healing Brush
* New painting engine

7.0.1 Mac OS 'Classic'/Mac OS X, Windows August 2002
* Camera RAW 1.x (optional plugin)
(Ted's life is changed.)

CS (8.0) Mac OS X, Windows October 2003
* Camera RAW 2.x
* Highly modified "Slice Tool"
* Shadow/Highlight command
* Match Color command
* Lens Blur filter
* Smart Guides
* Real-Time Histogram
* Detection and refusal to print scanned images of various banknotes[2]
* Macrovision copy protection based on Safecast DRM technology
* Scripting support for JavaScript and other languages
* Hierarchical layer groups

CS2 (9.0) Mac OS X, Windows 2000 / XP April 2005
* Camera RAW 3.x
* Smart Objects
(Ted's life changes again...)
* Image Warp
* Spot healing brush
* Red-Eye tool
* Lens Correction filter
* Smart Sharpen
* Smart Guides
* Vanishing Point
* Better memory management on 64-bit PowerPC G5 Macintosh machines running Mac OS X 10.4
* High dynamic range imaging (HDRI) support (32 bit per channel floating point)
* More smudging options, such as "Scattering"
* Modified layer selection, such as ability to select more than one layer.

CS3, CS3 Extended (10.0) Universal Mac OS X, Windows XP SP2 or later April 16, 2007
* Native support for the Intel-based Macintosh platform and improved support for Windows Vista
* Revised user interface
* Feature additions to Adobe Camera RAW
* Quick Select tool
* Alterations to Curves, Vanishing Point, Channel Mixer, Brightness and Contrast, and the Print dialog
* Black-and-white conversion adjustment
* Auto Align and Auto Blend
* Smart (non-destructive) Filters
* Mobile device graphic optimization
* Improvements to cloning and healing
* More complete 32 bit / HDR support (layers, painting, more filters and adjustments)
* Faster launching

CS4, CS4 Extended (11.0) Universal Mac OS X, Windows October 30, 2008
* Smoother panning and zooming and fluid canvas rotation
* OpenGL display acceleration in Photoshop
* Native support for 64-bit on Windows Vista x64
* Adjustments panel
* Auto-blending of images
* Masks panel
* Improved Adobe Photoshop Lightroom workflow
* Content-aware scaling
* Better raw image processing
* Extended depth of field
* Dramatically enhanced color correction
* Auto-alignment of layers
* New file display options (tabbed document display and n-up views)
* New file management and workspaces with Adobe Bridge CS4