Marshland (overworld swampy biome)

• will-o-wisp (new mob), spawn at night and can be catched in a lantern

Savage swamp (overworld swampy biome)

• firefly (new mob), spawn during night
• mosquitoes (new mob), spawn during day

Sky ruins (overworld plain biome)

• sky temple (new structure)

Fire plains (overworld plain biome)

Crystal valley (overworld cold biome)

Lava rocks (overworld warm biome)

Bramble (overworld rare biome)

• bramble ruins (new structure)

Birch landscape (new birch variant)

Mesa landscape (new badlands variant)

Coral cove (new ocean variant)

Blood heathland (new nether biome)

• beast soul (new mob), can turn into a bat and be burned by a spectral arrow
• nether castle (new dungeon)

Hot springs (new nether biome)

Last circle (nether rare biome)