This is another cool thing announced today, when a call comes in, you swipe to the right and instead of answering the call automatically, it gives you the option of answering or ignoring, replying with a message, or reminding you later to call the person back. When you’re in a meeting or somewhere you can’t answer the phone right away, this option is better than what I usually do, which is to ignore and then unlocking the phone and going to the messages app to write something to the person calling.