Also received this, I don't have any paid content in any of my apps. Also not using iTunes Connect nor Apple Music. Just the other day I received another one about Apple Books (also don't have any published content on Apple Books):

Hi, Unfortunately, at this time, the specific demo app source code in the WWDC session is not pending public release. You can however copy from the "Code" tab in the Developer app. It has the basic implementation skeleton to get you started. If you already have a PTT or VoIP calling app, you should be able to reuse the vast majority of what you already have. See also https://developer.apple.com/forums/thread/707689 This is what someone at Apple posted in another thread.

In your Info.plist, add a new dictionary named UISupportedInterfaceOrientations and add the following items: Portrait: UIInterfaceOrientationPortrait Landscape Left: UIInterfaceOrientationLandscapeLeft (Home Button is oriented left) Landscape Right: UIInterfaceOrientationLandscapeRight (Home Button is oriented right) Upside Down: UIInterfaceOrientationPortraitUpsideDown (Home Button is at top, device is held sideways)