"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
TouchPal Demos Gesture Keyboard with Sliding Input for iOS 8
TouchPal's video shows its keyboard supporting gesture/sliding input similar to Swype, as demoed in the stock Messages app on iOS 8. TouchPal also supports autocorrect and predictive word suggestions, although these are not shown in the demo.
While iOS 8's public release is still several months away, it's clear that keyboard developers, many of whom including Swype, Adaptxt and SwiftKey have honed their offerings on Android, are moving quickly to support iOS.
Several major keyboard developers have already been working with iOS, as seen with the SwiftKey Note app with Evernote integration and Fleksy's developer tools that allow developers to add support for the firm's predictive keyboard on an app-by-app basis. As a result, we expect quite a few third-party options ready for the iOS 8 launch.