https://www.gamespot.com/articles/sea-of-thieves-first-big-content-update-the-hunger/1100-6459151/

Rare is readying the first big content update for its shared pirate game, Sea of Thieves. The Hungering Deep expansion is set to arrive on Xbox One and PC next week, and ahead of its release, the developer has shared some more details on what new features await in the free patch.

Among other things, The Hungering Deep introduces "a range of permanent new game features" to the multiplayer pirate game. Among them is a new "monstrous" AI threat that players may encounter while sailing the high seas. Additionally, Rare is adding a new instrument to the game--drums--along with Speaking Trumpets, which allow you to find other pirate crews who have embarked on the same voyage as you.