I figured I'd put my hat in the ring here.

Predictions

• iOS 8
  • Lots of performance polish, a la Snow Leopard
  • UIMotionEffect improvements (full under-the-hood rewrite?)
  • Touch ID APIs
  • Some unifying API to talk with BLE-, WiFi-, etc based devices
  • Tint color becomes über important and defining, even more so than iOS 7
  • Fast, fast, fast and fast
• OS X.10 aka Huntington (shot in the dark here)
  • New UI similar to this
  • UIKit for OS X
  • Siri integration
• iOS ↔ OS X AirDrop
• Xcode 6
  • Overhaul of Instruments
• Some sort of new platform for iOS and OS X development with JavaScript roots
• Apple Beta Program
  • Beta testing of iOS and OS X apps a la Testflight
  • No limit to beta testers (won't count against developer's 100 devices)
  • Better crash reporting
• App Store app and music gifiting
• MacBook spec bumps across the line, end-of-line for non-Retina MacBooks
• A very average game demo from some company who has been trying iOS 8
• Craig Federighi stealing the show as per usual

Wants

• Objective-C 3.0 ^^^Just ^^^to ^^^make ^^^all ^^^the ^^^haters ^^^stop ^^^their ^^^bitching.
• XPC on iOS (what I really just want is Android-like intents...)
• Better permissions on iOS
• Siri API of some sort
• OS X does away with sandboxing
• OS X Safari notifications to become just OS X notifications