iOS 9 GM & iOS 9.1 Beta 1 Released, iOS 9 Public Download on September 16
Apple has released the GM build of iOS 9, alongside the first beta of iOS 9.1. GM stands for Golden Master and represents the final build in a beta software production cycle, matching the final version that has been released to the general public as a download on September 16.
iOS 9 GM arrives as build 13A340, while iOS 9.1 beta 1 arrives as build 13B5110e, both are available now as IPSW downloads though the iOS Developer Center for compatible iPhone, iPad, and iPod touch hardware. Additionally, public beta testers can get iOS 9.1 beta 1 through OTA directly on their devices.