That’s a sad news! My girlfriend’s iPhone 3GS will not longer be supported in the future. 🙁
It’s rumored that iOS 5, the latest mobile operating system for Apple will not be available for iPhone 3GS/3G.
iOS 4.0, released in June 2011 supports iPhone 3G, 3GS and iPhone 4. Still, some of the features in iOS 4, like the Personal Hotspot is not available in older hardware except iPhone 4. With the release of iOS 4.3, iPhone 3G is no longer being supported for future updates. iPhone 3G maximum operating system is iOS 4.2.1. Some iPhone 3G complain that their iOS 4.3.1 is very slow in their phone, prompting many to jailbreak their iPhone.