These are the secret code names of iOS, the operating system in the iPhone, iPad and iPod touch:
• 1.0: Alpine (1.0.0 — 1.0.2: Heavenly)
• 1.1: Little Bear (1.1.1: Snowbird, 1.1.2: Oktoberfest)
• 2.0: Big Bear
• 2.1: Sugarbowl
• 2.2: Timberline
• 3.0: Kirkwood
• 3.1: Northstar
• 3.2: Wildcat (iPad only)
• 4.0: Apex
• 4.1: Baker
• 4.2: Jasper (4.2.5 — 4.2.10: Phoenix)
• 4.3: Durango
• 5.0: Telluride
• 5.1: Hoodoo
Apparently, half of them seem to be Californian ski resorts, while others are taken from National Forests.
Once upon a time, Mac OS X also had secret code names: names of big wild cats, starting with Cheetah. Then they were secret no more, when Steve Jobs decided to make the codename part of the actual name of the product. Mac OS X Tiger sounds a lot better than Mac OS X 10.4, right?
I doubt that this would ever happen with iOS, though. I’m not bloody upgrading to something called iOS Hoodoo. [Google Books via Twitter via TiPb via Cult of Mac]