"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Apple's App Store Usage Numbers Suggest 46% Adoption Rate for iOS 8
Earlier this month, Apple's analytics indicated that 92% of devices connected to the App Store were using iOS 7, while 7% were using iOS 6 and 1% were on earlier versions of the mobile operating system. In December 2013, iOS 7 usage was at 74 percent, which jumped to 78 percent later that month. In late January, iOS 7 usage was at 80% and then scaled to 85% in March.
iOS 8 was released last Tuesday and brought several new features like Continuity, third-party keyboards, interactive notifications and more. However, a number of users have experienced a variety of problems with the operating system's initial release, including irregular battery drain, slow Wi-Fi, app crashes, and more.