7 things to know before upgrading to MacOS High Sierra 10.13September 24, 2017 by quixnet 7 things to know before upgrading to MacOS High Sierra 10.13CNETmacOS 10.13 High Sierra: The Ars Technica reviewArs TechnicaWhat You Need to Know About HEIF in macOS High Sierra and iOS 11Mac RumorsFull coverage