Java Edition 14w25a

14w25a is the twenty-seventh snapshot released for 1.8.

Additions

 * Added a new hostile mob, the Guardian, also has a boss like variant called "Elders" found within ocean temples.
 * 3 Elders in each temple, drops sponge. They Respawn.
 * 8 gold blocks can be found in the temple.
 * Added Prismarine, Prismarine Bricks, Dark Prismarine, and Sea Lanterns.
 * Added Prismarine Crystals and Prismarine Shard.
 * Added enchantment Depth Strider for boots, which allows you to move faster under water.
 * Prismarine Shards can be crafted into prismarine blocks.
 * Added Coarse Dirt, an unspreading dirt block. Little darker than normal dirt.
 * Added new "Wave" sound in ocean biomes.
 * You will get Mining Fatigue III when trying to enter a water temple.
 * A flashing boss Guardian will appear on screen when close to a temple.

Changes

 * Introduced Sponge and Wet Sponge to Survival, with new behavior and looks.
 * Rewrote how items are rendered.
 * Rewrote how blocks are rendered.
 * Rewrote how block data is handled.
 * Smelt stone bricks for cracked stone bricks.
 * Changed the texture of leaves on fast graphics setting. (Possible bug, as all of the textures, excluding spruce leaves, are the same.)
 * Smelt Wet Sponge to remove water and get Sponge

Fixes
From released versions before 1.8
 * – Real zombie sieges fail to start (fix included)
 * – Village siege's spawn location is calculated incorrectly (fix included)
 * – Redstone torches (and other redstone components) have inconsistent timings

From the 1.8 snapshots
 * – Ender Dragon destroy new Block "Barrier" When fly through
 * – Endermen do not teleport out of water, lava or when on fire
 * – Floating mushrooms on mooshrooms
 * – When destroyed, end portal giving lava particles
 * – Beacon is not transparent like before in inventory
 * – Anosotropic filtering?
 * – Arrow's  NBT tag does not update when fired into some blocks
 * – Anvil, beacons, pistons, end portal frames etc. are incorrectly shadowed in inventory
 * – Custom player skulls show as the default skin's head on mobs or players
 * – Anvil texture doesn't change in hand
 * – Same Door model on Mirrored Doors.
 * – Brewing Stand Bottles Model Error
 * – End Portal Frame (Falling Sand) texture render glitch
 * – Piston, end portal frame, Beacon and Anvil Items are darker than the block form
 * – When powering a piston, the piston head quickly appears as a full block
 * – Non-full blocks occupy a full block when moved by piston
 * – Sugar cane next to a block turns black
 * – Pumpkin top textures don't rotate depending on direction

From the previous snapshot
 * – with   on structure with dispensers vomits dispenser contents onto ground
 * – Command with Containers on Positive Axis Deletes Items
 * – command move: NBT containing blocks drop item