Java Edition 18w21a

18w21a is the thirty-eighth snapshot released for Java Edition 1.13.

Additions

 * NBT tag
 * Added the,  ,  ,  , and   NBT tags for dolphins.


 * Settings
 * New option in options.txt: mouseWheelSensitivity
 * Defaults to 1.0
 * Affects sensitivity of mouse wheel in-game

Changes

 * Mobs
 * Dolphins will now lead the player to treasures: when they are fed raw cod, they will swim to the nearest shipwreck or underwater ruins if they can find one within their search radius.
 * Mob yaw (left-right) head movement is now smooth.


 * Command format
 * The  NBT tag is now called , and no longer has number IDs in each compound.


 * General


 * Added (and fixed) item rarity colored tooltips for certain items:

Video
Video made by slicedlime:

Trivia

 * This snapshot was released on World Turtle Day.