This update added to bedrock adds loot boxes with special cosmetics for you get if you choose to craft one.

This was the April Fools Update for 2024

Loot Box: Crafted with 4Diamonds, 4 Emeralds, and 1 Chest. - You never know what you will get.

Pig Shirt: Oink
Build,Craft, Survive Shirt: Let people know you know how to Build, Craft, and Survive.
Goat Shirt: Your the Goat
Survival Mode: Really show you are surviving.
Blocks Shirt: A shirt with a few nice blocks on it.
Enderman Beanie: Keep yourself warm with this stylish beanie.
Smart Watch: Look like you have emeralds to spend with this watch.
Lego Minecraft Set: Very Rare, better not open it.

Other Changes:
Removed Herobrine
Pig are now 5% Cuter
Changed Diamond Sword to be more polished
Added a Loot button by using the big X in the top of the screen

sloof lirpa