I obtained this info off minecraft wiki, just so you know GeneralLarge amount of internal changes.Will be able to see blocks other players are mining/breaking in MPDemo mode playable through non-premium Minecraft.net accounts.Added Adventure Mode but it still needs more work. Large Biomes world type.Creative Mode updatesEnder Portal Frames added in Creative ModeWhile in Creative Mode, players can supply a powered minecart with fuel by right clicking it as if they were holding coal Flying in Creative Mode is no longer affected by water and lavaShift clicking in creative mode improved. Potions will be in the creative inventory screen.Improved creative inventory screen.Category Tabs and SearchingSurvival Inventory Tab"Backpack" inventory, 2x2 crafting grid, armor, and deletion box.Singleplayer will be a local server.Commands in Singleplayer.Optional bonus chests placed close to the player when creating a new Singleplayer world.Hardcore in multiplayer (HMP).While sitting inside of a minecart pushing the directional keys will make it move the direction you are pressing.Only works on rails.Added a /publish command to singleplayer to allow LAN connection.Temporary, and isn't accessible with cheats off.Blocks & ItemsAdded EmeraldAdded Emerald oreAdded Block of EmeraldAdded Ender chests - Drops 8 obsidian when broken without Silk Touch.Added Sandstone stairsAdded Cocoa plants that generate on the sides of jungle trees, which can be harvested for cocoa. Cocoa beans have a new texture. Cocoa beans drop from jungle tree leaves at the same rate as apples.Added Tripwire hooks.The hooks are connected (up to 40 blocks)by string, which will be placeable.Tripwires work on all entities. Added Book and Quill and Written Book Ability to write in Book and Quill (up to 50 pages), save them to edit later, and sign them and title them to finish off the book.Added a new type of Golden Apple. with attributes the Golden Apple had before 1.1.Added Bottle o' Enchanting to survival mode.Added Chainmail Armor to survival mode.New slabs of the 3 new plank types.Wood slabs behave as wood, not as stone.New gravel texture.New dispenser features:Dispensers will eject water and lava source blocks (from buckets).Will also take water and lava source blocks if there is an empty bucket inside.Will be able to place Minecarts on rails and Boats in water.Stackable items now stack outside inventory when thrown to the ground individually.Specific names for different wood, Wooden Planks, Leaves, Saplings, Sandstone, Stone Bricks, and Monster eggs. (e.g. Oak Wood, Birch Plank, Spruce Leaves, Jungle Sapling, Smooth Sandstone, Chiseled Stone Bricks, Stone, Monster Egg).Inventory, crafting & smeltingDifferent crafting recipe for books.Easier item manipulation within inventory. Brewing Stand allow use of shift clicking to put items in it. Shift + clicking can now be used to wear armor.Empty Buckets are now stackable up to 16.Wooden tools can be burned in furnaces.XP and EnchantingSilk Touch will be able to pick up Ender Chests, Ice, and Glass Panes.The first 16 levels are linear, while level 17+ require more points per level to the maximum level of 30 (although one can still have more than 30 XP levels to spend).XP orbs can now be gained through mining ores, and using a furnace for smelting.Enchantment has been reorganized so the higher/stronger level enchantment is on the bottom while the lowest is on the top. (The middle obviously being in the middle of the enchantment table.)Maximum level for enchanting is 30.Map & StructuresAdded Pyramids, a new structure in Desert biomes.Added Jungle Temple. Villages spawned in Desert Biome now have a different style.Stars are slightly smaller and slightly brighter.Villagers and MobsVillagers spawned from spawning eggs will get a random profession. Trading with Villagers.Bug FixesArrows "warping upwards" in multiplayer fixed.All multiplayer sounds have been fixed.Better chunk loading in SMP.Fishing lines are now visible in SMP.Fix for glitchy mob prediction in multiplayer.Using buckets filled with lava no longer consume the bucket when smelting items.Armor and Tool Enchantments now show on multiplayer.