Sea of Thieves releases March 20th 2018. My info is very limited about it but it looks HIGHLY interesting. My interpretation of it is that it's a MMO-RPG with you playing as pirates running around with friends blasting enemy ships/npc's away in a somewhat cartoonish (fortnite) way.
Here's a link to the official youtube page - https://www.youtube.com/channel/UCtt...-KoBae4F0Ay2tg
Here's a link to some gameplay - https://www.youtube.com/watch?v=5fn2PIVRkls