a recap of all the features they announced they will be adding into minecraft during minecraft live because this update will be huge:
(1/?)
Improved cave generation
caves will esentially generate differently from now on. they will be adding biomes to caves, along with set water levels
improved terrain generation
mountains will generate more realistically, and have a tree line. It was not pictured but they are also adding the snowier snow, or powder snow. the block will look identical to normal snow but you will fall through the block.
lush caves
The lush caves are a cave biome featuring new plants and mobs:
glow berries- a light source and is also edible
spore blossom- a giant pink flower that sticks to the ceiling and emits particles
dripleaf plant- a large plant with leaves that you can walk on. if you stand on the leaves too long they start to bend, and you slide off.
azaleas- flower bushes, i am not sure which features they have as i dont remember them mentioning it
dripstone caves
this cave biome has giant stalagmites and stalactites. they fall when the block they are on is broken and entities die when they land on them.
amethyst geodes
amethyst geodes spawn in caves. they are very rare (?) and the purple block they grow on is un-obtainable in survival much like an animal spawner. the chrystals make a pretty chime like sound when you walk on them.
