All the current xcode stacks track a set version plus betas of that version. The problem with this is if its not the absolute latest beta version itunes rejects the app as an “invalid” binary. See below:
Invalid Toolchain - Your app was built with a beta version of Xcode or SDK. Apps submitted to the App Store must be built with the GM version of Xcode 9 and the SDK for iOS 11, tvOS 11, watchOS 4, or macOS 10.13 or later.
Can we have a stack that tracks the latest version of xcode without betas?