Macworld Apple’s big iOS 18 release is a big deal for iPhone users. Even though Apple Intelligence is comings in a staged rollout in iOS 18.1, 18.2, and beyond, this first release is packed with new features and interface changes. The final release is out now, and you can install it on all compatible iPhones by opening Settings, tapping General, then Software Update. Updated September 16: You can now download and install iOS 18 on all compatible devices. iOS 18: Release notesHere are Apple’s official release notes for iOS 18. We have a broad overview of the major new features in our iOS 18 Sup…