They just added New Dimensions to Minecraft (1.16 Snapshot Update 20w21a)

Here's a look at the NEW custom dimensions added to Minecraft 1.16. You can now add your own custom worlds and dimensions! This is awesome!PLAY Block Ness Mo

Nether Update – Minecraft Wiki

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Nether Update – Minecraft Wiki

100 Updates NEW in Minecraft 1.16 (Nether Update)

Custom Dimension Minecraft Data Pack

Smithing Table Upgrade, Wall Changes, + Menu Upgrade!

Java Edition 1.16 – Minecraft Wiki

Java Edition 1.19 – Minecraft Wiki

NEW Snapshot 20w21a: NEW DIMENSIONS and Redstone Changes!

Minecraft 1.16 Nether Update Answers! Aether Dimension, New Biomes

Java Edition 20w14∞ – Minecraft Wiki

Minecraft 20w21a Snapshot - Custom Worlds & Dimensions Added

Custom Worlds + Dimensions, Redstone Change, + more!

Minecraft Snapshot 20w06a