How to sign up for the iOS 10, MacOS Sierra public betas - CNET 13 Jun, 2016 0 Comments Here's how and when you can take Apple's new operating systems for a spin. from CNET How To http://ift.tt/1PpCHHp via IFTTT Download Tutorial PDF Share Home » CNET How To » How to sign up for the iOS 10, MacOS Sierra public betas - CNET