Developers have been busy combing through the first iOS 9 beta for clues about upcoming Apple services, but in the lastest iOS 8.4 beta that was also seeded to developers earlier this week, the first signs of the Apple Music streaming service have started popping up (literally).
Some iOS 8.4 beta testers have received pop-up notifications in the old Music app. The introductory prompts reveal how Apple plans to get iOS users to sign up for the new service, either on an individual plan or family plan.
Here’s signup screen users will be greeted by:

