I'm trying to do some forward compatibility testing within XCode for a Swift-based application. Currently I see all of the versions of iOS which are currently supported, but I am wondering if there is a way to import beta versions of iOS so that a simulator can use them?
iOS Beta versions for XCode Simulators
If you can get the Xcode beta that contained the iOS Simulator Beta you are interested in, you can copy the beta runtime out of Xcode.app to /Library/Developer/CoreSimulator/Profiles/Runtimes.