The next logical step for Apple is to introduce a device the size of the iPhone with a built-in 3G chip. Like an iPod touch but without the cheap feel. Imagine being able to use an iPhone contract-free and pay only for a data plan. It would follow the same idea as the 3G plan for the iPad on AT&T, just on a smaller scale.
Now imagine this device jailbroken and creating a mobile wifi hotspot. It would be the convenience of a MyFi but with the cool features of an iOS device. I am really surprised that Apple has not pursued a product like this. It seems perfect for the Netflix and skype generation.