Java Edition 1.15 Pre-release 4

1.15 Pre-release 4 (known as 1.15-pre4 in the launcher) is the fourth pre-release for Java Edition 1.15, released on December 3, 2019.

General

 * Performance
 * Performance improvements.


 * Precision
 * Increased the floating point precision used for certain types of particle spawning to 64-bit (double-precision), from 32-bit (single-precision). This fixes precision errors at high coordinates, especially beyond 16,777,216 blocks, for the following particles:
 * Fishing particles
 * Squid ink particles
 * End gateway particles
 * Conduit particles
 * Entity falling from height impact particles
 * Sweeping attack particles
 * Damage heart particles
 * The /particle command
 * Mycelium particles
 * Underwater particles
 * Nether portal particles
 * End portal particles
 * Brewing stand particles
 * Spawner particles
 * Barrier particles
 * Armor stand breaking particles
 * Suspended gravity affected block particles
 * Increased precision for the spawning of primed TNT entities at high coordinates.
 * Increased precision for the books of enchanting tables checking for players.

Video
Video made by slicedlime:

Trivia

 * Like the first and third pre-release but unlike the second one, this version name has a lowercase "r" in-game.