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

 * A way for mod/plugin makers to implement new commands and register them in a simple way.
 * Animation/Entity Models
 * Could possibly include model changes via NBT.

Changes

 * Command Blocks
 * New GUI
 * Will contain tab to complete.
 * Clouds
 * New Cloud Rendering System.
 * Shaders
 * Switch away from using fixed-function OpenGL to using Shaders.