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

5votes
Crying Mountains Biome
13votes
Nether biome Ghast Forest
15votes
Ender jungle
30votes
Magma Spikes Biome (For the Nether Update!)
33votes
Rain Forests (Jungle Variant)
22votes
Land of the Lost (Nether Biome)
13votes
The Wither Caverns
5votes
Nether Biome: Greek Tartarus themed
20votes
Wither Woods & Wither Plague
32votes
Obsidian Spikes biome for the Nether.
11votes
Nether Update: New soul sand in soulsand valley should be called Soul Stone
7votes
Nether Update: That red shrub should be called the Wraithweed
4votes
The Otherworld
13votes
Food dimension
16votes
Deadlands Biome
21votes
Lake Biome
9votes
Shadewood trees and "Lost" biome
39votes
Better lakes and rivers
3votes
Vortex and Dark Compass
9votes
The "ultimate​ dimension"
7votes
Crimson biome
21votes
Making every biome relevant! (Specialize plants)
12votes
Great river biome
8votes
Underworld Dimension (Beneath the Overworld)
8votes
Gravel "traps" generating on cave ceilings
30votes
Cave Biomes (as a concept)
4votes
Lightning dimension bone blb
44votes
Forgotten biome
12votes
Gravel desert biome for the Nether
19votes
Underground jungles