Java Edition 1.18 Pre-release 1

1.18 Pre-release 1 (known as 1.18-pre1 in the launcher) is the first pre-release for Java Edition 1.18, released on November 11, 2021, which reinstated Amplified and Large Biomes, made some tweaks, and fixed bugs.

General

 * World types
 * Readded Amplified and Large Biomes, they have been adapted to the new terrain.
 * Amplified had terrain with following characteristics:
 * Rounded terrain at Y=320, instead of Y=256 previously.
 * Doubled offset above sea level.
 * Greatly increased 3D noise values, resulting in lower factor values inversely.
 * Doubled peak jaggedness.
 * Large Biomes had terrain with following characteristics:
 * Most biomes are four times larger, except mountain peaks and rivers.
 * Multinoise is slowed down by factor 4 for temperature, vegetation, continentalness, and erosion, but not for ridge noise.

Blocks

 * Conduit
 * Now has an assigned tool, the pickaxe.

World generation

 * Upgrading of old worlds
 * Changed transition between old and new terrain to be less cliff-like.
 * Surface height, biomes, and caves will now blend much more smoothly.
 * Deepslate and bedrock now properly generate in upgraded chunks.
 * Cave carvers now properly generate in upgraded chunks.

General

 * Data generator
 * option now creates full worldgen reference files instead of just biomes.


 * World creation screen
 * Removed "Caves" and "Floating islands".

Video
Videos made by slicedlime: