Completely new villages. New houses and traders. Look different depending on biome.
New stairs and slabs from stone, smooth stone, andesite, granite and more.
Decoration block.
Bamboo, Bamboo Forests. Can be used as fuel. Grows very fast.
New Flowers:
Cornflower, blue dye, plains.
Lily of the Valley, white, forest.
Wither Rose, black, spawned from Wither Boss.
Barrel: Works as a chest.
Blast Furnace: Smelts ores faster.
Smoker: Smelts food faster.
Cartography Table: Used to craft maps.
Composter: Converts some items to bone meal.
Fletching Table: Does nothing yet.
Smithing Table: Does nothing yet.
Stonecutter: Used to craft stone-related blocks.
Grindstone: Used to remove enchantments and combine items.
Lectern: Book stand
Loom: Used to craft banners.
New weapon. Stronger than bows but takes longer time to reload. Can be crafted.
Bushes where sweet berries grow. Can be planted.
Come in 8 new skins.
Mobs that attack and raid Villages.
Large hostile mob that attack villagers with the help of Pillagers.
Spawn in Bamoo Forests in Jungles.
Spawn in Taigas. Picks up items and blocks on the ground. Can be tamed. Attack rabbits and chickens.
Walks around in the world. Spawns with llamas.
Mobs that attack and raid Villages.