See on the page/download the code : Availability iOS 15.0+ Beta macOS 12.0+ Beta Xcode 13.0+ Beta This version in the link is for iOS 15 - the iOS 14 version is gone.

Thank you! I found: https://docs-assets.developer.apple.com/published/459596b7a2/FrutaBuildingAFeatureRichAppWithSwiftUI.zip