iOS 9.1 beta 1 for iPhone 5s | 3.62 GB
Just when you think that Apple is coming to the end of a long iOS beta program, it starts all over again. With iOS 9 set to arrive on public iPhones and iPads next week, developers received the Golden Master release on September 9th, and a day later those on the Public Beta Program also received a new beta to test. But it's not iOS 9.