Harry Potter and the Deathly Hallows question

I think the next step could be something about Harry's children. Some quirk or familial trait, perhaps having one of them be non-magical and how the family would deal with that

I think, probably knowing the complexity of these stories, it would be both of these things and something else.
Personally I like the idea of a non wizard villain, maybe a ... muggle.

What are we talking about???? Is she making another Harry Potter Series???