Adobe Photoshop CSX new features:

Enhanced masking feature
Layer Mask Density option allows you to fade away the effect of a layer mask gradually revealing the parts that are hidden.

Real-time filters with no color depth restrictions
New Adobe technology called Hydra allows filters to use graphics card power in image processing instead of the CPU. That means all operations will be much faster. Hydra filters support all color depths as well.

Liquid resize feature
This new technology called Seam Carving allows you to shrink or enlarge a photo disproportionally without stretching it.

Texture mapping feature
Choose from a variety of built in textures to map over an a subject instantly.

Improved Dodge and Burn tools
Improved algorithm in these tools lets results look less destructive and more natural.

Polished interface
Photoshop interface brightness will be adjustable like in Adobe Bridge with buttons and dialog boxes look will be improved.

Extended and enhanced color profile management.
Multichannel, Device-Link and Abstract color profiles to be added.

Other Photoshop CSX new features and improvements:
Integration of xRez technology for creating amazing panoramas.
integration of KnowHow and Kuler into Photoshop.
Rotatable canvas like in Corel Painter.
Better HDR support.
Faster load time.

System requirements

Windows

* 1.8GHz or faster processor
* Microsoft® Windows® XP with Service Pack 2 (Service Pack 3 recommended) or Windows Vista® Home Premium, Business, Ultimate, or Enterprise with Service Pack 1 (certified for 32-bit Windows XP and 32-bit and 64-bit Windows Vista)
* 512MB of RAM (1GB recommended)
* 1GB of available hard-disk space for installation; additional free space required during installation (cannot install on flash-based storage devices)
* 1,024×768 display (1,280×800 recommended) with 16-bit video card
* Some GPU-accelerated features require graphics support for Shader Model 3.0 and OpenGL 2.0
* DVD-ROM drive
* QuickTime 7.2 software required for multimedia features
* Broadband Internet connection required for online services*

Mac OS

* PowerPC® G5 or multicore Intel® processor
* Mac OS X v10.4.11–10.5.4
* 512MB of RAM (1GB recommended)
* 2GB of available hard-disk space for installation; additional free space required during installation (cannot install on a volume that uses a case-sensitive file system or on flash-based storage devices)
* 1,024×768 display (1,280×800 recommended) with 16-bit video card
* Some GPU-accelerated features require graphics support for Shader Model 3.0 and OpenGL 2.0
* DVD-ROM drive
* QuickTime 7.2 software required for multimedia features
* Broadband Internet connection required for online services*