Ionic - Build for IOS on Windows (for latest IOS and Ionic)
After doing some research I found out that ionic has a cloud packaging service. https://ionicframework.com/pro/package (previously https://docs.ionic.io/services/package/ [link dead])
I use windows to develop Ionic. In order to build for IOS I have installed VMWare on which I emulate MacOS X, installed xcode and all the tools necessary for building ionic. I have been able to test and deploy my apps to an ios device through usb with ionic/xcode. However I haven't push any apps to the app store yet. If you want to get started into this, take a look at this link.