https://finance.yahoo.com/news/apple-wwdc-2019-preview-133249932.html > Apple's iOS is one of the most popular operating systems in the world. It powers more than 1 billion devices used by consumers from America to Zimbabwe, making any changes to the operating system incredibly important for Apple. > For 2019, the company is expected to roll out its iOS 13 update with key enhancements coming across the board.