Live-blog: Thinner, faster iPhone 5 to ship Sept. 21

The new iPhone 5 is here.

Apple's latest and greatest phone offers key upgrades like a larger screen, faster 4G data speeds, a more powerful processor, and an improved camera. New iOS 6 software also improves the Siri voice control system and adds a different maps app, with turn-by-turn directions.

Join Joanna Stern of ABC News and Yahoo's Oliver Libaw, Jason Sickles and Scott Ard for live coverage of the event. Follow along, submit your comments, and ask questions as we find out about the phone's new features.