User blog comment:J Fan/Dead Men Tell No Tales - Details: Story, Characters and Setting/@comment-5487463-20150312233022/@comment-1984959-20150313013729

Well, obviously, Geoffrey Rush and Brenton Thwaites have been confirmed (ok, aside from the Thwaites is "Davy Jones' son Henry" bit which can be considered a rumor). As far as the others, all that is officially known is that Australian locals were hired to partake in the film, so it may very well be true. But as it's merely reports, it is hard to say for now in terms of truth...but who knows?