Did anyone notice that the Stocks and calculator widgets are in different places on the flickr photo's than on the Iphone photo's available at Apple.
This probably means that you can move your widgets around and place them in any fashion that you like.
It's obvious you'll just be able to drag in different widgets to where you want, delete ones you don't use, and hopefully also change the 4 "main" ones on the bottom to the 4 you most use (I'd swap Mail for SMS, for example)...