Minecraft blog - Everything announced at Minecon Earth (Mob B – The Monster of the Night Skies)

Minecraft's oceans are going to get their biggest update ever! The Update Aquatic pours a ton of new features into the game, including coral, kelp, more types of fish, dolphins, explorable shipwrecks, new water physics and more! A newly revamped ocean will require a new weapon for you to defend yourself, so the Update Aquatic will also introduce the trident. Not only can this weapon be thrown at enemies and used in close-combat, it can also be enchanted for ace tactical advantages. The Loyalty enchantment will make it come back to you even after you've thrown it, while enchantments like Impaler and Slipstream Dash will... well, we'll let you use your imagination! The Update Aquatic will come to Minecraft in a future update.

MOB B IS COMING TO MINECRAFT!
We have a winner! Congratulations to Mob B you'll be added to Minecraft! Thank you to everyone who voted. It's fantastic that our players got to be involved in what goes in the game!

And another huge thank you for being part of MINECON Earth! We couldn't put on shows like this if it weren't for the support from our countless players all over the world. You truly helped us make a livestream and show that's accessible for everyone.