Deep Silver has a game forthcoming that features islands, water and people in pirate costumes, and it ain't Dead Island. No, it is Risen 2: Dark Waters, the sequel to a game that was a fantasy RPG.
What Deep Silver is doing is listening to its customers. One of the most popular side quests in Risen had players helping the daughter of a pirate named Steelbeard, whose name you hbear in that trailer. So in developing the sequel, the Risen 2 decided to flesh out this continuity a little more, which is why it is now a pirate RPG set in the southern seas.
According to a news release, players will be able to "launch parrots at people/creatures to annoy the fuck out of them". There will also be companion NPCs. Everything else, Deep Silver ain't saying, so enjoy that trailer, it's made from actual gameplay.