iOS codenames are the codenames given to products by Apple
during development. The codenames are often used internally only for
various reasons This article contains a list of
iOS codenames used by Apple.
We know iOS by version numbers, as in iOS 4.2.3, iOS 5.0, and so on.
Turns out Apple is also using codenames to refer to its platform
revisions, as unveiled by developer Steve Troughton-Smith.
Here's a list of all the Apple iOS codenames....