Well, you are basically getting a less functional, over priced, touch screen netbook.
Still no multitasking, still no flash support, still required to use the App store (until it is jailbroken) limiting your choice of apps. With the keyboard taking up almost 50% of the screen space, you have a 5" screen, weak computer.
What really got me is the ATT $30 unlimited dataplan. ATT has been complaining that Iphone users are killing their 3G network. Here, where I work was denied unlimited Data plans, we were only allowed 6GB per Iphone because of ATTs fear that we would use too much data.
If that's true, how does ATT plan to support the Ipad's unlimited data plan?