* they will have the A9 chip. It's 70% faster at computer processing tasks and 90% faster for graphics processing
* On Maps, users can peek in to quickly get directions or perform other tasks.
* Navigating across apps is simpler, too, says Federighi. Applying a little force on Touch pulls up other apps quickly, similar to the double tap on the Home button.
* Sensors on the screen react to how hard the user presses. For example, in Messages, a subtle press brings up a preview of the message, while a deeper push down pulls up the full message. There are also shortcuts users can pull up for every day tasks.
* 3D Touch Demo. Starting with Mail, Federighi uses a mini-tap to take a quick look at a message. Flicking up quickly moves to actions such as Reply or Forward, or swipe left or right for additional actions. If there's a time involved, users tap to quickly view the Calendar. For flight times, a subtle tap quickly pulls up the itinerary.
* The phones will continue to run the M9 coprocessor. It also boasts a second-generation Touch ID fingerprint sensor, to run twice as fast. The camera receives an overhaul to 12 megapixels. Schiller says that's 50% more pixels than before.
Apple CEO Tim Cook introduces the new iPhone 6s and 6s Plus during a Special Event at Bill Graham Civic Auditorium September 9, 2015 in San Francisco, California. Stephen Lam, Getty Images
SOURCES -USA Today, Apple