Apple iOS 10.2.1 beta 4 comes to developers Apple Latest Posts Software Updates by Shivam Singh - January 14, 2017 0 Apple has recently released a new beta version of Apple Watch OS 3.1.3 and it was released as Apple Watch OS 3.1.3 beta 2. Now the company has pushed a new beta build to the iOS 10.2.1 . The latest beta build of iOS 10.2.1 comes as iOS 10.2.1 beta 4