Adobe has released a public beta version of Photoshop CS6, which is available as a free download. New features include a new look, improved performance, and video editing features, which are now available in standard Photoshop, not just in Photoshop Extended.
Expected to debut sometime in the first half of this year and is compatible with Mac OS 10.6.8 or later, and Windows XP SP3 or Windows 7 SP1.
Download here : http://labs.adobe.com/downloads/photoshopcs6.html
DP Review has an in depth look at this app : http://www.dpreview.com/articles/2601746315/photoshop-cs6-beta-new-features-for-photographers