We're going to need something a lot more heat resistant than silicon if you want an Octo-core @2.5Ghz per core processor in such a thin space. In a heavy usage scenario the system on a chip would fry itself very rapidly.Camera: 24MP 2K video at 120FPS
Screen PPI: 600+
Flash Memory: 256GB
Processor speed: Octo-Core @ 2.5GHZ
Graphics: 10 times better than now.
Thinness: 20% less than iPhone 4S
Battery life:16 hours