Jim Hamm considers how iOS 5 will affect notebook sales. "Here’s a video with a summary of iOS 5. Lots of new features for mobile devices. The most important, in my opinion, is now the iPad, iPhone and iPod no longer need to have a computer to connect to. They can be free-standing devices. A nice step. On the flip side, possibly this might have a deleterious effect on notebook sales. On the other hand, though, I don’t think I’d just want to have only a mobile device and not have my Mac. I think each has its strong points. Time will tell how this all shakes out."
Here's a thought-provoking article from Jim that speculates about the future of Mac.