Yes. I think we will see Harry's death but I don't know, it could happen many times in a future. Sort of the epilogue of Harry Potter but more in the future. I can see Harry's grandchild or grandgrandchild adding a lines about his death, to finish the case files. But I don't know, I may be totally wrong.
Back on topic, I thought in another loose end. The Sidhe fiddler who became an ice statue for the Buffet in PT. We don't know if he survived, but if he did, he has a whole of a reason to hate Harry and ally himself with his enemies.