Less than a week after the last iOS 9.1 beta release, Apple has now released a fourth beta of iOS 9.1 to developers. iOS 9.1 appears to be primarily focused on adding developer-level support for features such as 3D Touch and Live Photos on the iPhone 6s and iPhone 6s Plus, with this latest beta focusing on fixing a number of issues from prior betas. Registered iOS developers can download the iOS 9.1 beta from Apple’s Developer site; a public version…
