https://www.pcgamer.com/sea-of-thieves-the-hungering-deep-teases-a-new-terror-from-the-blackest-depths/

The Hungering Deep, the first content update for the multiplayer pirate adventure Sea of Thieves, is now live. The free update adds new in-game features and cosmetics, a "monstrous peril" from the darkest depths, and the game's first time-limited adventure that tells the tale of "Merry" Merrick, a boozed-up two-peg-legger who could maybe use a little help dealing with a bit of a white whale-type situation.

Rare dropped a developer update video to coincide with the release of The Hungering Deep, but like the Sea of Thieves website itself it doesn't say too much about what's actually in store.