The biggest difference is the splash screen on launch. The best new feature for photographers is a new sharpening filter that helps eliminate camera shake. Other than that, general 3d rendering is about 2% faster on my computer. (A very minimal upgrade) The UI is the same, plugins work the same, performance is about 5~10 seconds faster. I don't see any reason for anyone to upgrade if they already have CS6. The only reason to upgrade for a purchased version would be monthly subscription payments for a lesser impact on your wallet. You can get any of the Adobe series the Other way, but I don't recommend, endorse, or approve of doing that. Hope this helps.