Along with the added space, Apple is taking the opportunity to introduce entirely new interface capabilities, and in the process continuing to write the book on user experience. I expect that the general conventions that Apple includes as part of their touch-capable OS will eventually become the standard across the industry.
Take a look at the guided tours they put up this week and you get a sense of what I'm talking about...
http://www.apple.com/ipad/guided-tours/
Take a look at the guided tours they put up this week and you get a sense of what I'm talking about...
http://www.apple.com/ipad/guided-tours/