1. I noticed that with the ipad the space is very dynamic. The interaction may be more intimate than with a book itself. Yes, a magazine has the tactility and intimacy in that regard but the ipad introduces decision making and physical interaction.
2. There is no longer a limitation to imagery or content. No longer do you have to worry about printing costs of photography and body copy. Like Times magazine mentioned. The photographers in the field can shoot as much as they want and can explore video as well. It is making the experience that much more real.
3. Things as simple as video are now possible. With the ipad we are no longer limited to still objects and static imagery. Now things can rotate, move, expand, contract.