Why are these people waiting in line for the iPhone 3GS? It's the same iPhone but faster, there will be plenty available in stores everywhere, and you won't be any cooler for having it now because nobody will notice.
I guess if you're on the early line for preorders, or if you couldn't get a preorder and are desperate to get to the later, non preorder line, you might feel a bit desperate. But even at the launch of the original and 3G, we learned great respect for Apple's ability to keep hot product in stock. They forecast and they forecast well. Better than the weather man. So line waiting has largely become a non issue.
And this time around, why would you feel you had to have it right away? It's the same old design and of course the fact that most iPhone 3G users are not eligible for the reduced-price upgrade. I suppose first time and first gen buyers are dying for a taste, though, like those people buying iPhones in 2007 .