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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1298votes
(Updated 23 April) Ready to talk biomes and dimensions? Here's how. Pinned
11671votes
Volcano Biome
6007votes
Oasis under review
4900votes
(Dimension) Sky lands under review
4690votes
New Biome Called Cherry Blossom Grove under review
3693votes
A Mangrove forest announced
2955votes
Sandstorms under review
2601votes
Biome: Magic Forest under review
2333votes
(Swamp) Fog under review
2209votes
Giants Biome under review
2064votes
Add natural events to the Nether. under review
1764votes
(May/June 2018) Featured Topic: Underground!
1327votes
Make it rain in savanna biomes so that we can bless the rains down in Africa! under review
1204votes
Dream Biome! under review
1136votes
Waterfall Biomes
1113votes
Dimension: The Abyss
1022votes
Natural Disasters
747votes
Deep Nether
611votes
Better Snowfall
563votes
(Biome) Dead Forests
556votes
Dinosaur Dimension
455votes
luminescent forest
436votes
Swamp Overhaul! (Pictures and Textures Included)
403votes
City Biomes
389votes
Improvements to Rivers
376votes
(Java Parity) Nether should use the full 256 world height.
360votes
(July 2018) Featured Topic: The Swamp
349votes
(Nether Biome) Magma swamp
340votes
Realistic Biome generation