"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Apple Seeds First Beta of iOS 11.1 to Developers
Registered developers can download the iOS 11 beta from Apple's Developer Center or over-the-air once the proper configuration profile has been installed from the Developer Center.
Several iOS 11 features did not make it into the first public release and these could potentially be included in the iOS 11.1 beta.
Apple has said both peer-to-peer Apple Pay payments and iCloud support for iMessages will be introduced in later iOS 11 updates, and new emoji characters are expected at some point.
iOS 11 marks a major update to the operating system, with systemwide design tweaks, a new Lock screen experience, a revamped Control Center, and an entirely new interface for the iPad that includes a Dock, Drag and Drop support, and a redesigned App Switcher for better than ever multitasking.