Fix for glitchy mob prediction in multiplayer.
Large amount of internal changes.
Silk Touch will be able to pick up ice and glass panes.
Modding API to officially support third-party plugins.
Plugins will be easy to install by simply dropping them into a folder.
Stackable items now stack outside inventory when thrown to the ground individually.
Easier item manipulation within inventory.
Brewing stands allow use of shift clicking to put items in it.
⇧ Shift+clicking can now be used to wear armor.
Dispensers can place Minecarts on rails and Boats...