Here is the complete list of those. Just check this out:

1. The long-rumored darker and modern user interface

2. Redesign and cleanup of all icons, buttons, dialogs – and new rich cursors

3. New Content-Aware Move, Extend, and Patch Tools, plus a better Content-Aware Fill

Photoshop CS6 newly included terrific video editing from a DSLR:

4. Terrific [DSLR] video editing in both Standard and Extended versions, for many formats*

5. Skin-Aware Masking with Face Detection – auto-generation of skin-tone masks

6. Complete overhaul of 3D in Photoshop CS6 Extended – 1 tool now does the work of 14

How about some realistic brushes:

7. Some great new (and realistic) brushes – Erodible Tips and Airbrush Tips

8. Brand new Camera Raw7 technology like in Lightroom 4

9. White Balance and Noise Reduction as a selective Brush

10. Text/Character Type Styles and Paragraph Styles

11. Adaptive Wide Angle Lens Correction to fix distortion and straighten lines

12. Enhanced and more flexible Brush Pose, Brush Projection, and Color Dynamics

Pixelbender is now Build in for Oil Painting filter:

13. Pixel Bender now built into Photoshop CS6 for the oil painting filter

14. Rewritten vector engine, real vector strokes with Dashed and Dotted Lines

15. Mercury Graphics Engine gives 10-100X faster Liquify, Transform, Warp & more

Graphics Processing Unit (GPU) increases its performance here:

16. Big gains in performance throughout due to much greater use of the GPU

17. New Gradient Map “Photographic Toning” presets and Color Lookup adjustment layer

18. Blur Gallery for creating shallow depth of field, tilt-shift blur and graduated blur

19. Much smarter “Auto” for better-starting points and one-click corrections

Lighting effects are back again:

20. Lighting Effects is back and better than ever, with much-improved controls and 3D

21. Completely reengineered and nondestructive Crop Tool, like Lightroom’s

The solution for awful crashing problem:

22. Background Save, including tunable Auto-Save and Crash Recovery

23. Integrated Layer Search/Filtering – by name, effect, style, mood, or attribute

24. An easy migration tool that imports/exports custom presets and settings

25- New “Bicubic Automatic” default to Image Size always does the right thing

26. Path snapping & anti-aliasing improvements – critical for exacting work

Insert most common texts from Lorem Ipsum:

27. Easy insert of Lorem Ipsum text from the Type Menu

28. The return of Contact Sheet II and PDF Presentations in Photoshop

29. A completely redesigned and enhanced Print dialog

30. Refined HDR tool with better quality including Edge Smoothness option and new presets

Standard version included Animation panel:

31. The timeline animation panel now in the Standard version, no longer an Extended-only feature

32. Ships with Bridge CS6, which now has native 64-bit support for faster performance

33. Mini Bridge taps the power of Bridge in a panel, and can now run in a filmstrip

34. Photoshop CS6 is 4.5 million lines of code that took 10,000 staff hours to build!