- Better notifications
- Integration with Twitter (which is huge--and a big blow for Facebook, who had been rumored to be in the mix for this sort of thing with Apple)
- A way to text people without paying for texts (assuming you both have iPads or iPhones)
- Tabbed browsing to Safari
- The ability to update your iPad/iPhone without connecting it to a computer (at last!)
Finally, here's a link to a good New York Times article about where you should focus your attention when buying new electronics. Highly recommended reading, especially to people who aren't as confident in their tech-buying kung fu.