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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1662votes
0votes
0votes
ancestral city
0votes
Add dragons into the worlds!
1vote
End biomes - end city upgrade
3votes
0votes
shulkers
2votes
The End
1vote
Hedgehogs
0votes
Bioma
1vote
Add Joshua Trees to Minecraft
0votes
Meceta
1vote
Nouveau biome de l end
0votes
Novos mobs
1vote
3 new biome ideas for 1.21!
4votes
1vote
Mossy Biome Variants
3votes
Aether
6votes
An update for the End
1vote
redwood forest biome
1vote
Marsh biome plz
0votes
Trees
0votes
trees & plants
2votes
The deep dimension