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 readded Amplified and Large Biomes, made some tweaks, and fixed bugs.

General

 * World types
 * Readded Amplified and Large Biomes. Their implementation has been adapted accordingly to the terrain generation overhaul.
 * Amplified worlds have terrain with the following characteristics:
 * Terrain rounded at Y=320, instead of Y=256.
 * Doubled offset above sea level.
 * Greatly increased 3D noise values, resulting in lower factor values inversely.
 * Doubled peak jaggedness.
 * Large biome worlds have terrain with the following characteristics:
 * Most biomes, except mountain peaks and rivers, are four times larger.
 * Multinoise 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

 * Lava lakes
 * Now only generate above Y=0


 * 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.


 * Features
 * Rewrote feature generation system.
 * Now feature generations are configured with placed feature files.

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: