Ever since Apple in 2000 released the public beta for Mac OS X, all subsequent versions had an animal epithet. Until OS X 10.8, there were mostly big cats and then gave you the OS X versions names of places in California. It is true that iOS versions never gave official with cool nickname like El Capitan or Mountain Lion, but also the internal code name for OS X and iOS versions retained Apple always for itself. The website iMore has now collected all iOS codename.
These are the secret iOS codename:
iOS 1.0: Alpine (1.0.0 - 1.0.2: Heavenly)
iOS 1.1: Little Bear (1.1.1: Snowbird, 1.1.2: Oktoberfest)
iOS 2.0: Big Bear
iOS 2.1: Sugar Bowl
iOS 2.2: Timberline
iOS 3.0: Kirkwood
iOS 3.1: Northstar
iOS 3.2: Wildcat (iPad only)
iOS 4.0: Apex
iOS 4.1: Baker
iOS 4.2: Jasper (4.2.5 - 4.2.10: Phoenix)
iOS 4.3: Durango
iOS 5.0: Telluride
iOS 5.1: Hoodoo
iOS 6.0: Sundance
iOS 6.1: Brighton
iOS 7.0: Innsbruck
iOS 7.1: Sochi
iOS 8.0: Okemo
iOS 8.1: OkemoTaos
iOS 8.2: OkemoZurs
iOS 8.3: Stowe
iOS 8.4: Copper
iOS 9.0: Monarch
iOS 9.1: Boulder
iOS 9.2: Castle Rock
iOS 9.3: Eagle
Following the release of each version of the code name for developers is not very hard to figure out. Even if the knowledge can be classified by the code name for the category "useless knowledge", we do not deny that they have their own charm and we would be pleased about matching wallpapers á la OS X.
One question is still open: What codenamed Apple has completely could well come up for iOS 10?
