Today i find my iphone get update iOS 12 and of course if you are developer, you can get the latest Xcode. Yes, Xcode 10 that you need to install to make your iphone can run on iOS 12. You can find what's new in Xcode 10 here : https://developer.apple.com/xcode/whats-new/ Becareful i got errors when i tried to install xcode from App Store. The message says you need to have macOS version 10.13.6 or later. In my expierence i have encountered twice failed to install macOS and you can't enter your macOS screen. Fortunately i found the way to fix it. Here's the link https://www.youtube.com/watch?v=gheoy07XNEU