iOS 8 for Users and Developers looks at all of the new features for iOS 8 including Family Sharing, Health, Spotlight, iCloud, Extensions, Custom Keyboards, Handoff, HomeKit, Changes to Messages, Safari updates, and Mail changes.
Specifically for developers We look at Handoff, HomeKit, extensions, Custom Keyboard Security, Touch ID API, Sprite Kit, Scene Kit, CloudKit, PhotoKit, WebKit (WKWebView), Universal applications and Size Classes, switching to Modern Objective-C, Visual Debugging, the basics of Swift, and how App Bundles will affect developers.