The people on the product team for Photoshop haven't been getting much sleep. We can only imagine how much Red Bull and coffee they consumed in the process of taking Photoshop CS2 to CS3, which Adobe released as a downloadable public beta back in December. The biggest cause for celebration - at least for creatives who bought new Macs in the last year or so - is that Photoshop CS3 runs natively on Intel-based Macs. And, of course, it won't come as a surprise to anyone if, once Photoshop CS3 ships, Apple sees a spike in sales of Mac Pros and MacBook Pros.
Whether or not you've downloaded and started working with the CS3 beta, there are likely some features you haven't had the time to try - or simply didn't know existed. To help you merge into the fast track, we offer a guided tour of CS3's most compelling new features: how they work, what they're good for, and in some cases, why we wish Adobe had taken them just a little further. We give you what you need to put CS3 through a more rigorous battery of tests, so you can decide if you want to step up for keeps - or not.
the entire article is here
First Look: Inside Photoshop CS3- MacLife