Java Edition 1.9

1.9 is an upcoming update to Minecraft with no set release date, currently only listed in the bug tracker as "Far Future Version - 1.9+", as well as mentioned by the Minecraft Developers.

Additions

 * Animation / entity models
 * Could possibly include NBT models

Changes

 * Command Blocks
 * New GUI
 * Will contain tab to complete
 * Clouds
 * New Cloud Rendering System

Fixes
18 bugs fixed
 * - Villagers ignore data tags in trading
 * - Failing to place blocks in creative mode causes an animation
 * - Dropped items bounce on stairs, cauldrons, carpets and full / locked hoppers
 * - Villager / Player getting killed by zombie through a closed door
 * - Bow and arrow can fire through doors and fences.
 * - Zombie Pigmen don't attack in groups when fighting other mobs
 * - the hitbox of brewing stands is missing the blaze rod
 * - Pick up framed enchanted items with "Pick Block (MOUSE 3)" doesn't give you the enchanted item
 * - Fences won't attach to layered snow blocks
 * - 1.5 Odd Mob 'magnetised attraction' behaviour
 * - name tag doesn't work on entities with right click ability
 * - New creative gui showing detailed effects does not show on some potions. Neither to bows.
 * - Chest interface not closed when chest is blocked from opening
 * - Incorrect Creative Instant Health Damage value
 * - Mob head takes a fraction of a second to change to selected head
 * - Glass panes and iron bars don't connect to graphically opaque blocks that are registered as transparent. e.g. slime blocks, ender portal frame blocks and monster spawner blocks.
 * - Nether Wart hitbox is incorrect on multiplayer (untested on singleplayer)
 * - Damage Value for objective stat.mineBlock is missing