"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
New Video Again Shows 5.5-Inch iPhone 6 Battery With 2,915 mAh Capacity
A capacity of 2,915 mAh would be much greater than that of the 1,560 mAh battery found on the iPhone 5s and the rumored 1,810 mAh battery said to be included on the 4.7-inch iPhone 6. It is also likely that Apple will look to tightly integrate iOS 8 and the hardware of the iPhone 6 to allow for optimal performance and battery life.
Apple is expected to show off of the 4.7-inch and 5.5-inch iPhone 6 at a media event tomorrow. In addition to a larger display, the 5.5-inch version of the iPhone 6 is said to contain an improved camera module with optical image stabilization, a faster processor, and more. It is unknown whether the larger iPhone 6 will ship with the smaller model of the handset, as production issues may hold the 5.5-inch version back.