The icons are similar (despite how shitty an icon it is), but it won't actually be used anywhere other than apple.com/iOS5 as far as I know; for example it's not even in the Settings app on iOS 5. Plus people are forgetting that this icon is just what Apple have used for years as their WiFi/AirPort. If anything, the developer copied — or at the very least, took a lot of inspiration from — Apple's icons for his app's icon.