The iphone 5s has just been released and there has been a lot of buzz. Many are saying that there is not much change from the iphone 5. I would have to say that in looks they may be right, but there are a lot of new features. The thumb print sensor is by far my favorite part. To unlock your phone it takes a scan of your finger print. They call this the touch id. It's a very secure way to access your phone. Also they now come with an A7 chip so now your phone is faster than ever. The new iphone comes with the isight camera which makes taking an awesome picture even easier.
The only thing different about the appearance of the phone is that it now comes in gold and white aswell. Also you can get the phone in plastic as well. Below is a link to the apple website describing everything in more detail.
http://www.apple.com/iphone-5s/features/