Apple is preparing a major overhaul of its operating systems for the iPhone, Mac, and iPad, set to be released later this year.The revamp will include changes to the look of the operating systems, including icons, menus, apps, windows, and system buttons.The redesign is aimed at simplifying navigation and control for users and is based on the Vision Pro's software.The updates will be the most significant upgrade to the Mac since Big Sur and the biggest revamp for the iPhone since iOS 7.