Other places where Apple is shucking the bonds of the PC include backups. In the past, iOS devices have backed themselves up while syncing with iTunes—and while you can still opt to keep things that way, either via cable or the new Wi-Fi Syncing (see below), those who choose to eschew a computer can backup their device online, via iCloud.
To reduce the amount of space needed—each iCloud account comes with a free 5GB, and the smallest iOS device Apple sells is 8GB—only your data is backed up. And not even all of your data: Any media you've downloaded from the iTunes Store doesn't count against your total, and that includes apps as well as music, video, and books. You can also selectively choose which apps' information you want to back up in Settings -> iCloud -> Storage & Backup -> Manage Storage (or Settings -> General -> Usage -> Manage Storage).
Like Wi-Fi Syncing, backups happen when your device is on a Wi-Fi network and plugged in, so if you let your iPhone or iPad charge over night, it should be all set when you pick it up in the morning.
You can also manage your device's internal storage. Settings -> General -> Usage provides a list of all installed apps—although many of the apps that ship on the phone are not present—and their size; tap on any to see the size of any documents or data that are being stored in that app. (Often, those file sizes are far smaller than the app itself.) There's a Delete App option available on most of the screens as well.
iOS software updates are another task that used to require running to a computer; now that's built in as well. It's available under Settings -> General -> Software Update though, as you might expect, we've been unable to test it in the final version of the software so far.
Finally, should you decide the name of your iOS device isn't quite cutting it, you don't have to turn to a computer to change it. Just navigate to Settings -> General -> About and tap on the Name field to enter a new one.
By now, the pattern in Apple's major iOS updates ought to be pretty clear. Every significant version change has brought at least one very important systemwide update that addresses a shortcoming, along with a handful of feature enhancements and other tweaks. In version 2.0, that was the App Store; in 3.0, it was cut, copy, and paste functionality; in iOS 4, we finally got multitasking. In iOS 5, that role is played by improved notifications.