User blog comment:J Fan/Dead Men Tell No Tales - Details: Story, Characters and Setting/@comment-25426315-20150425143639/@comment-1984959-20150428142908

Just because it's written in The Price of Freedom doesn't mean it's going to follow into the films word-for-word. Like any franchise, it seems Pirates can't keep their canon straight and not-so-confusing. The fact that Blackbeard was never a ghost (pre-OST) and that we will soon see the "Trident of Poseidon" (which also appeared in the Jack Sparrow book series) should be an indicator of this fact.

That being said, it may too quick to assume some things as fact until there is more solid proof - which I can only say are trailers or anything officially confirmed, at the earliest. Simply put, it's all speculation at best. Photos from the set do show some good stuff but hard to get the meaning until the intended date. But as said before, we will see in 2017.