New version of iOS was announced several months ago. Since then, Apple released system in many beta versions, and they were available only for limited amount of people. Firm tested new version of their system until the presentation of new iPhones, where Apple confirmed that system is ready in a stable version. Several hours ago Apple started releasing stable version of iOS system in all countries around the world.
Newest version of iOS system is available for many devices. Whole list includes: iPhone XS Max, iPhone XS, iPhone XR, iPhone X, iPhone 8, iPhone 8 Plus, iPhone 7, iPhone 7 Plus, iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus, iPhone SE and iPhone 5s. System is also available for many versions of iPad and for iPod touch from 6th generation. List of all supported devices was published on official Apple's website.