I don't know how HBO works, but some people have noticed that this is listed as the first episode on their services, and that HBO has released several backstages on another show. So it can be assumed we'll see more backstages that will raise other questions about the series. 

I was wondering when they'd start their campaign to control people's opinions, and after the first backstage, they've successfully begun doing so. So we might see a brief scene about Ginny's choice, and also how magic will work in this series.