Adobe Photoshop CS4 Complete {No Activation Required} Photoshop CS4 is the 11th version of Adobe's venerable and industry-standard imaging application. It's hard to imagine that Adobe can continue to make large changes to Photoshop. It seems that just about everything but the kitchen sink is already in the application, but once again, Adobe has found ways to take a mature application and improve it. In this review, I'll give you a first look at the new features you'll find in Photoshop CS4.