In addition to being free, iMessage adds some other nifty features, such as delivery receipts, optional read receipts, and the ability to see when your conversation partner is in the midst of tapping out a message (you'll see a dialog bubble with an ellipsis in it). Plus, the whole conversation is encrypted, and you can even pick up a chat you started on your iPhone on your iPad, or vice versa, without missing a beat.

At long last, Apple will include . As the name suggests, Reminders lets you create to-dos and check them off when you're done. You can view reminders by date, or create a list for a specific task, such as grocery shopping. Plus, the reminders sync with iCal and Outlook.

And while you can get reminded at a particular date and time, the nifty feature that Apple has most touted is the ability to get your notification depending on you are. So when you actually go to the grocery store, your phone will remind you of all those things you wanted to remember to get while you were there.