Please read the pinned post on creating new biomes and dimensions. Remember that individual items, mobs, and structures should still go in their own categories - this is not a category for entire updates.

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796votes
(Updated 23 April) Ready to talk biomes and dimensions? Here's how. Pinned
1639votes
(May/June 2018) Featured Topic: Underground!
4774votes
Volcano Biome under review
1362votes
Add natural events to the Nether. under review
2042votes
(Dimension) Sky lands under review
3245votes
Oasis under review
2132votes
New Biome Called Cherry Blossom Grove under review
925votes
Make it rain in savanna biomes so that we can bless the rains down in Africa! under review
675votes
Natural Disasters
1320votes
Biome: Magic Forest under review
723votes
Dimension: The Abyss
1491votes
Giants Biome under review
584votes
Dream Biome! under review
1414votes
Sandstorms under review
1261votes
(Swamp) Fog under review
259votes
City Biomes
306votes
(July 2018) Featured Topic: The Swamp
630votes
Deep Nether
287votes
Swamp Overhaul! (Pictures and Textures Included)
1302votes
A Mangrove forest announced
364votes
Dinosaur Dimension
190votes
Put the far lands back in the game.
620votes
Waterfall Biomes
75votes
Deeper Underground
121votes
(Java Parity) Nether should use the full 256 world height.
220votes
Nether Biome: Obsidian Shores
132votes
Brimstone Caves(Nether Update)
55votes
Sand Layer Desert Biome
94votes
Candy dimension (was: New dimension)