InsideHW.com has posted article about Adobe Photoshop CS4

New edition of one of the best, if not the best, application for processing raster graphics attended for photographers but also for graphic and web designers, is finally tested on InsideHW. One of most important technical novelties is that Photoshop CS4 will be delivered only as 64-bit version. Adobe made this decision after preliminary tests that showed that performances of 64-bit applications are better for 8% to 12% comparing to 32-bit version. True power and advantages of 64-bit version are hidden in fact that it can use large amounts of memory.

Adobe Photoshop CS4 Review