Along with bug fixes and tweaks this update 1.8.2 will add new biomes, new mobs and new food, along with a new creative mode, sprinting, hunger, and much more.
Full List
• Added Creative Mode.
• Disabled Achievements and Leaderboard updates if the player is in Creative Mode, or if the world has been previously saved in Creative Mode.
• Added a simple tutorial for Creative Mode.
• Added sprinting to Survival Mode.
• Added flying and sprint-flying to Creative Mode.
• Added new items to the game – Melon, Melon Slice, Melon Seeds, Pumpkin Seeds, Raw/Cooked Beef, Raw/Cooked Chicken, Rotten Flesh, Pumpkin Seeds, Iron Bars, Fence Gate, Stone Bricks, Stone Brick Slabs, Stone Brick Stairs, Brick Slabs, Brick Stairs, Ender Pearl, Web,Vines, 10 more Music Discs, and Chain Armor.
• Added new items to the crafting menu – Melon, Melon Seeds, Glass Pane, Fence Gate, Iron Bars, Stone Bricks, Stone Brick Slabs, Stone Brick Stairs, Brick Slabs, Brick Stairs.
• Added terrain generation features – Strongholds, Villages, Abandoned Mineshafts and Ravines.
• Biome code additions, including rivers and oceans.
• Changed the bow to have drawing and firing action.
• Added a quick move to the dispenser.
• Added a quick equip for armor to the inventory interface.
• Added a quick move for ingredients and fuel in the furnace interface.
• Brought forward the mining speed changes from 1.2.3
• Brought forward apples dropping from leaf blocks from 1.1
• Brought forward change from 1.2.3 to make pumpkins and melons grow from stems much faster, and not require farmland around the stem to grow on.
• Fix to vines brought forward from 1.2.3 to stop them spreading too much.
• Added the Food Bar to the HUD.
• Added stacking for food items.
• Added the eating animation.
• Enabled crafting mushroom stew without a crafting table.
• Added the blocking move with swords.
• Changed all the text descriptions for food to show how much they refill the food bar.
• Passive mobs will now flee when hit.
• The snout on pigs now protrude from their head.
• Skeletons now hold full size bows.
• Animals no longer despawn which makes it possible to capture them.
• Zombies now drop Rotten Flesh instead of Feathers.
• Updated some mob sounds.
• Shears can now collect Tall Grass and the new Vine.
• Improved sunrise and sunset.
• Improved the rain edges (when looking up in rain).
• User-placed leaf blocks no longer decay.
• Cloud height raised to the top of the map, so clouds can no longer phase through blocks.
• Cloud movement syncs with the game’s time.
• Both Wooden and Stone pressure plates can now be placed on fences.
• Improved chest model with a 3D lock, and opening and closing animation.
• Added a countdown timer to the autosave to stop it being such a surprise.
• Added the ability to rename an existing saved world.
• Added map icons to the in-game player list to match their color in the map.
• Added a confirmation dialog on the player choosing to exit without saving.
• Added a character display when sprinting or flying.
• Updated the How To Play HUD with the Food Bar information.
• Added descriptions for Creative Mode and Sprinting to the How To Play menus.
• Updated the Download Content menu with pictures of the DLC available.
• Removed Herobrine.