Does a beta version need a user agreement and a privacy policy for beta testing among external users on TestFlight? If so, must these agreements be as thorough as they would be for the general-availability release?

These questions pertain to an iOS app for public (non-ad-hoc) distribution in the App Store: If the app only needs distribution APNS services and does so using a key, can the app go without any certificates? Does this app need a provisioning profile given question #1 and if all signing is managed automatically by Xcode? If this app requires a provisioning profile, what happens when it expires while the app is currently available for download in the App Store?