Adobe Photoshop CS4, the latest version of Adobe™s premier photo editing software, codenamed Stonehenge has been leaked to torrent sites. The date of compilation of this build is Nov 1st 2007, so there are chances that this could be a version sent out to testers. There is also rumor that this version will have only few fixes for Vista users. Here is an image of the new version running on Windows XP. There is no news on when this new version will be available

Extract on hard disk or USB key and run PhotoshopPortable.
If you drag'n drop a file on (or open with) PhotoshopPortable: it will be opened in Photoshop.
Settings of installed Photoshop should be preserved.
Starts up so much faster