User blog comment:Tato982/New Potc 5!!/@comment-1984959-20130413120751

Sorry to say, but this is a situation where almost nothing is set - if one named anything (such as the film's subtitle) that could change. No one can really say anything definitive. So yea, it's best - if you're looking for official word - to wait until it is officially announced. Everything else is speculation.

Of course if you're looking for a fan's perspective, there are rumored titles. Not sure which are mostly used, unlike Pirates 4 where many believed that the title would be The Fountain of Youth, used many moons before On Stranger Tides was officially announced.