Design:
"Creating an entirely new design meant inventing entirely new technology." - Apple
The iPhone has a dual-tone body, black & slate, and white & silver. The body of the phone is taller, with a 4inch Retna Display. All of the previous models had a 3.5inch Display. The phone is thinner than all of the previous models. It now features a "Thunder Wire" which, on a Mac, the Thunder Wire allows for faster transfer time. The charging port is now an 8-pin connector, and the headphone jack is now located on the bottom of the phone.
Unfortunately the camera cannot take any higher mega-pixel images than the iPhone 4S. The camera lens is smaller, and made out of a Sapphire Crystal. Which is the second strongest glass like material, other than diamond. Just hearing that, and knowing that the back of the iPhone is a metal, the phone just seems much more durable and stronger. The back of the iPhone is made with the same Aluminum material found on the current Notebooks (MacBook Air, and Pro).
Design wise, it really seems to be an iPhone of more strength, and definitely eye catching.
Features:
Of course, the iPhone will include what we've all been waiting for... iOS 6.
It will not only be avalible on the iPhone 5, but the 4S, 4, 3GS, The new iPad, iPad 2, iPod Touch 4G, and the iPod Touch 5G.
An all new, redesigned Maps application will be released with iOS 6, with Turn-by-turn Navigation, and a Fly-Over View. It looks amazing.
Siri was absolutely ground breaking. All new features have been added to Siri with iOS 6, including Hands-Free, game scores, booking reservations, and much more. In my opinion, they really are making Siri more and more of your own person assistant.
One of the best things about the iPhone 5 will be the speed, and the 4G LTE capability. Yes, people who have iPhone 4S say that their iPhone says 4G, but is it really? Apple claims that the 4G LTE will actually be able to download and upload faster than most current day Wi-Fi networks. Which is really amazing. The new iPad feature an A5X Quad-Core Processor, but I don't think many people saw an all new A6 processor coming.
Overall, I think the iPhone 5 will truly become the best phone out there, for now. If I could get one right away I would. It is really something that you should look into yourself, and if you still aren't convince enough go check them out in Apple Stores, AT&T, Verizon, and Sprint once they carry them, and see how much you just like using it there.
All information was put together based on the Apple Site, and prior knowledge. If any information is false, which I'm sure it's not, I'm sorry.