For those who have Adobe CS2, their icons were rather creative. Photoshop had a picture of a feather, Illustrator had a flower, etc. What happened? When Adobe CS3 came out, it came with the lamest set of icons i've ever seen. They were extremely simple, and didn't live up to their name (CS stands for creative suite.) Anybody could make improvements to these icons. (I used Microsoft Word for crying out loud.)
I have seen various sites which criticize the design of Adobe's CS3 icons. One you may find interesting is an article called What Intern design Adobe's CS3 Icons? This article criticizes the new and not improved designs of CS3's Icons and Splash Screens, and give comparisons of CS3 & CS2.
Will Adobe CS4's new icon design go back to CS2's creative design, or will it continue with the ever-so boring CS3 tiles? I wouldn't hurt for Adobe to re-create some more interesting splash screens either. I'm looking forward to see what new designs (creative or not) adobe will have with it's CS4 suite. And by the way, CS4 is currently in beta, so no icons are available at this time.