Java Edition 16w39a

16w39a is the seventh snapshot released for 1.11.

Blocks

 * Observer
 * Ported from the Pocket and Windows 10 editions.
 * May have slight behavior differences due to different redstone systems in Java edition compared to Pocket Edition
 * Can detect Block Updates and output redstone signal
 * Normal BUDS still remain


 * Shulker Box
 * Crafted using a chest in the middle with 2 Shulker Shells, one above and one on the bottom of it.
 * Can be held in your inventory. Will show up to 5 slots of its contents when hovered over in the inventory.
 * Similar to chests in that it stores items, but different in that it will keep its inventory when broken.
 * When destroyed, does not drop contents, but stores them in the block.
 * Drops itself even when in Creative only if there is an item inside.
 * Has the same opening/closing animation as a Shulker.
 * Will not open if there is a block in the half block next to the shulker (Normal facing will open for top slab, but not bottom)
 * They change their hitbox when open; from height 1 to 1.5
 * Can be dyed in any of the available colors.
 * Dyed Shulker Boxes are slightly different from the undyed one; the dyed ones have a darker bottom part, whereas the regular one keeps uniform color.
 * Due to a bug, it can't be dyed in survival. Will be fixed in the next snapshot.
 * Can be placed on top, side, bottom of blocks, like Shulkers.
 * Can be placed down and opened like a chest inventory, and has 27 slots.
 * The space needed to open it depends on the orientation.
 * Can not be placed inside another box.
 * It is mined quickest with a Pickaxe, however it can be mined using anything, including the fist
 * Can be used with hoppers, droppers and dispensers, just like any other item.
 * A dispenser will place the shulker box on the ground
 * Break into item form when pushed with a piston.

Items

 * Shulker Shell
 * Sometimes dropped by Shulkers when killed.
 * Can be combined with Chests to craft Shulker Boxes


 * Totem of Undying
 * Dropped by Evoker upon death.
 * Will save your life when you receive a killing blow, while holding it in either hand.
 * Gives regeneration and absorption when activated for a couple of seconds, to help survive followup damage.
 * Does not revive when killed by /kill or by the void.
 * Shows a 'particle' just like the curse from an elder guardian.
 * Golden ankh like animation whenever the item is consumed.
 * Uses the actual totem item model, in other words, if you change the texture and model of the totem, the animation will also use these.


 * Exploration Map
 * Can be bought from cartographers.
 * Just like a map, except will show terrain outlines and a specific structure with treasure.
 * Used to locate Woodland Mansions and Ocean Monuments.
 * Slightly tinted to match the type; blue for Ocean Monuments and brown for Woodland Mansions.
 * Has the appearance of a typical treasure map.
 * Treasure maps display the biome outline of their respective biome.
 * Initially a map with outlines of land, no loaded land shown. Loads land once you find it.
 * When resized they retain the structure marker but lose biome outlining.
 * Small player dot to indicate far away destinations — The locator dot on the map will be smaller the farther away you are

Mobs

 * Llama
 * Spawns naturally in extreme hills.
 * Drops Leather.
 * Has multiple colors, similar to Horses.
 * When aggravated, they spit to attack.
 * Always aggressive toward Wolves.
 * If you hit them, they spit at you once, dealing damage.
 * Can be saddled using a carpet of any color and ridden
 * Using a different color of carpet gives a different texture on the saddle
 * Like donkeys, can be equipped with a chest
 * Varying amount of slots depending on strength stat of Llama.
 * Can be leashed.
 * When a lead is put on, surrounding llamas in a small radius will be attracted and try form a caravan behind the leaded llama.
 * The "caravan" llamas are passive to all mobs.
 * Has own sounds.


 * Vex
 * Spawned by Evokers.
 * Small, flying mobs. Like a small ghost that flies around.
 * Hostile towards the player.
 * Can phase through blocks, similar to spectator mode.
 * Texture changes to have red marks when about to attack
 * Holds an Iron Sword.
 * Has own sounds.
 * Spawn in Woodland Mansions.
 * Attack villagers


 * Illagers
 * Has the same model as Villagers, but with a pale grey skin and dark clothes.
 * Vindicator
 * Outcast villager
 * Has an iron axe in one of their hands
 * Hostile towards player.
 * Has own sounds.
 * Spawn in Woodland Mansions.
 * Attack villagers
 * Drops Emeralds upon death. Rarely drops an Iron Axe.
 * If named to "Johnny", it will fight against any kind of mob, except of Vindicators and Evokers.
 * Evoker
 * Acts like a mini-boss, as when in battle it summons Vexes and Fangs to attack.
 * Summons a stream of fangs coming out of the floor, damaging mobs
 * Can be replicated with command /summon minecraft:evocation_fangs ~ ~ ~.
 * Always deals three hearts of damage, ignoring armor.
 * Raises arms to indicate spell casting.
 * Hostile towards player.
 * Attacks villagers.
 * Has own sounds.
 * Spawn in the top floor in Woodland Mansions, along with the Vindicator and other summoned mobs
 * Drops Emeralds and a Totem of Undying upon death.

Enchantments

 * Curses
 * Enchantments with negative effects, such as Curse of Vanishing and Curse of Binding.
 * Uncommon appearances in dungeon loot
 * Naturally appear on tools and armor randomly (mainly end cities)
 * Curse of Vanishing
 * Item that has this curse will not drop upon death and will instead vanish.
 * All slots in inventory are affected.
 * The gamerule KeepInventory true will prevent this.
 * ID is 71.
 * Curse of Binding
 * Binds the armor to the player if it has got this enchantment, effectively disallowing the player to manually take off this armor piece. They will stay on your player until they break, or until death
 * Creative players are unaffected.
 * Does drop when gamerule keepInventory is false, when dying.
 * ID is 10.

Commands

 * syntax:
 * Admits: EndCity, Fortress, Mansion, Mineshaft, Monument, Stronghold, Temple and Village.
 * Locates the nearest structure, like EndCity or NetherFortress.
 * Can locate dungeons, mineshafts, strongholds, temples, fortresses etc.
 * When finding structures similar to "temple" structures, it cannot differentiate between types, this means any "Temple" structure found can be igloos, witch huts, jungle temples or desert temples.
 * Returns message: "Located [Structure] at [x] [y] [z]"
 * Pushes coordinates in chat for the executor of the command.
 * Will display the Y coordinates as "(y?)" for some structures
 * Will display the Y coordinates as "(y?)" for some structures

World generation

 * Return Portals
 * Look like end gateways, but teleport you to the main island's spawn platform, instead of outwards to the outer islands.
 * Generate randomly throughout the end near End Cities


 * Woodland Mansion
 * "Will spawn a boss-like mob called the Evoker in one of the top floors.
 * "Procedurally generated house"
 * "End game challenge"
 * Generates naturally in forests or roofed forests
 * Has 3 floors, the bottom 2 are larger and the top is smaller.
 * Random layouts, using procedural generation and structure blocks
 * Spawns 2 new mobs with generation. They will not respawn after generation.
 * Evoker
 * Can summon Vexes
 * Vindicator
 * Can be found with a Woodland Exploration Map.
 * Consists mostly of wood and cobblestone.
 * Structures include all types of carpets, cobblestone walls, blocks, slabs, & stairs, birch fences & planks, glass panes, and dark oak wood & planks.
 * Has many different rooms, and can contain grown trees, saplings, water, ores, flowerpots, all types of 1 block tall flowers, anvils, bookshelves, wool, different types of stone, pumpkins, farmed plants(including mushrooms), chests with good loot (diamond armour, golden apples), ladders, iron doors, iron bars, rails...
 * One room structure part contains a spider spawner.
 * Some rooms are not accessible through normal means and are surrounded completely with walls.

Mobs

 * Shulker
 * Now drops 0-1 Shulker Shells.
 * Can now change their color by  tag


 * Zombie Villager
 * Now have their own sounds


 * Villager
 * New librarian profession: Cartographer.
 * Sells Exploration Maps.
 * Tier 1: A fair amount of paper --> Emerald
 * Tier 2: One compass --> Emerald
 * Tier 3: Emeralds --> Empty map
 * Tier 4: Emeralds and a compass --> Ocean treasure map or a Woodland treasure map.

Items

 * Map
 * Now generates End landscape properly, instead of the noise pattern it used to share with maps of the Nether (the Nether still has this dirt/stone map).