What’s new
– Front-facing video chat camera
– Improved regular back-camera (the lens is quite noticeably larger than the iPhone 3GS)
– Camera flash
– Micro-SIM instead of standard SIM (like the iPad)
– Improved display. It’s unclear if it’s the 960×460 display thrown around before — it certainly looks like it, with the “Connect to iTunes” screen displaying much higher resolution than on a 3GS.
– What looks to be a secondary mic for noise cancellation, at the top, next to the headphone jack
– Split buttons for volume