So Apple just released iOS 7 with a brand new re-design that no one could even imagine. If you would like to download and try out iOS 7 on your iPhone then feel free to clicking on one of the link below.
Download IOS 7 beta IPSW for iPhone 4
Download IOS 7 beta IPSW for iPhone 4S
Download IOS 7 beta IPSW for iPhone 5