Java Edition 1.0

Minecraft 1.0 is the official release of Minecraft for the computer. It was released during MineCon on the 18th November 2011 by Notch at the keynote address ceremony at 21:54:50 GMT. Jeb confirmed the version number 1.0 in a tweet. 1.0.0 includes bug fixes from the 1.9 Pre-Releases as well as new sounds and other minor changes.

Changes
To see complete list of known changes, see Version History

-Removed Herobrine
 * A proper ending to the game in a realm called "The End".
 * New Nether content.
 * Nether Brick
 * Nether Brick Stairs
 * Nether Brick Fence
 * New achievements.
 * Score is stated on death based on total experience orbs held on the player.
 * A new game mode. (Hardcore)
 * New biomes. (Mushroom Biome, Tundra reintroduced)
 * New items.
 * Eye of Ender
 * Blaze Powder
 * Blaze Rod
 * Glistering Melon
 * Glass Bottle
 * New Texture for the back of Steve's head. (Confirmed)
 * New Texture for most Blocks.
 * Iron (Block)
 * New blocks.
 * End Stone
 * Brewing Stand
 * Cauldron
 * Enchantment Table
 * New mobs. (Enderdragon (Boss Mob), Snow Golem,  Mooshroom Cows,  Villager Mobs, Magma Cube, Blaze)
 * Animal breeding.
 * Potions.
 * Tool rebalance as well as enchantments.
 * Swords do less damage.
 * Improved Armor system.
 * Mob health rebalance. (Sheep, Spiders, Zombies)
 * New sound effects, including: Chest sound, Door/Gate sound, Bow Sound, Enderman sound, Silverfish sound, Explosion sound, Egg sound, eating sound, sound when xp orbs are collected, sound of bones cracking after fall damage is taken, sound of a broken tool.
 * Item Repair.
 * New Stronghold content (Portal Rooms with the end portal frames).
 * Bow now has durability
 * Lily Pads that can be placed on water and stood upon.
 * Axes now deal more damage to fences than swords.
 * Redstone Dust placed on its own no longer has a "plus" format, instead it has a small clump.