While iOS 7 won't be released until September 18, it's possible to download and install iOS 7 today, and install it on your existing iPhone or iPad. You can install iOS 7 on the iPhone 4, 4S, and 5, the fifth-gen iPod Touch, and every iPad and iPad Mini except the original iPad. Installing iOS 7 will give you access to some exciting new features, such as improved multitasking and AirDrop, and the complete visual overhaul will of course make your Apple device look completely different (and inspire all of your friends to gape and stare).