Prior to the release of iOS 12.1, Apple released a User Guide for iOS 12.1. Breakdown Of The Previous iOS 12 UpdatesApple iOS 12.1 is the second update to iOS 12 following iOS 12.0.1 and iOS 12.iOS 12.0.1iOS 12.0.1 was released on October 8th and included several bug fixes. iOS 12The main iOS 12 update launched on September 17th. Apple iOS 12 also included the ARKit 2 augmented reality platform, which included face tracking, 3D object detection and realistic rendering. Apple redesigned the Books, Stocks, News and Voice Memos apps in iOS 12 with several new features.

Source: Forbes October 30, 2018 17:03 UTC