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.

Vote for an existing idea or New post

4votes
Hot forest and termite hills
4votes
The Wacky Dimension
4votes
Deciduous trees/Warm Hued Tree leaves
4votes
the overgroth *edit*
4votes
Canopy Generation: The Third Layer
4votes
Golden Plains biome
4votes
suburban biome
4votes
The battle field
4votes
Lightning dimension bone blb
4votes
Mooshroom Island Update.
4votes
Welcome to The Overworld, Nether Mobs!
4votes
Introducing the glass reef
4votes
Wither Mushroom for the Nether
4votes
Artificial biomes
4votes
Nether Coruption
4votes
Diamond dimension
4votes
The Parallel Dimension
4votes
Make Hardcore Harder (Part 2, World Generation)
4votes
Elemental dimension
4votes
The Great Beyond
4votes
Blue tree springs
4votes
Biome specific ore spawn
4votes
Hot Spots in the Nether(Part 1/3): The Biome Itself
4votes
3rd Chain of Islands Past End Cities
4votes
Generacion de biomas nuevos a partidas antiguas
4votes
Cactus Desert Biome
4votes
Nether Overhaul Part 2: Nether Plains
4votes
Prairie
4votes
The biggening dimension
4votes
Less lakes and empty caves