Ubisoft announced the season pass for the game. There will be no naval multiplayer.
Creative director Ashraf Ismail said the developer team tried to create naval multiplayer battles. “Naval multiplayer, unfortunately, we don’t have it. It’s something we tried at the beginning, but we didn’t feel we can get it to a good enough level for this iteration.” So there won't be any multiplayer ship battles with other players.
Here's the description of the season pass which includes all DLC and a new character:
It is 1715. Pirates rule the Caribbean, terrorizing navies and humiliating empires. From sinking warships to conquering fortresses, Captain Edward Kenway stopped at nothing to earn his fortune and legend. Yet, the adventures of his first mate, Adewale, have never been revealed. Until now. Pre-order Assassin’s Creed IV: Black Flag Season Pass now for the chance to play as Adewale, a new assassin who will take you even deeper into the real explosive events of the Golden Age of Pirates.
- Save $20 – The Season Pass includes all of the DLC packs for just $19.99. That’s a $20 savings off the regular price.
- Eye-Opening Content – Get access to extra single-player missions, multiplayer content, and new ways to personalize your pirate experience.
