http://mojang.com/2016/06/minecraft-110-an-update-of-fire-and-ice/
What comes after 9? Well surprise, surprise: we’ve updated Minecraft to
version 1.10! Get it hot off the stove in the Minecraft launcher.
The update contains changes for both the coldest and hottest areas of the
Minecraft world. Polar bears roam the frozen plains, and a stronger kind of
zombie may approach you in the deserts. There are also other additions you
may find pleasant.
For instance, the update includes the second “technical block” after
Command Blocks: the Structure Block. This block allows map makers to store
templates of structures and place them dynamically with the help of Redstone
trickery. Since it’s a technical block, you will not find it in the game
menus, and is restricted to players who are admins in creative mode.
Here is a list of all the changes:
Many bug fixes
Added Polar Bear
Added Husk and Stray
An auto-jump option
Improvements to some commands
Structure blocks for custom maps
Underground fossils made from bone blocks
Added Magma Block
Added Nether Wart Block and Red Nether Bricks
Some huge mushrooms can be even larger
A rare chance to find lonely trees in plains
Find abandoned mineshafts filled with gold in mesa biomes
Villages generate better paths between the buildings
More variations of villages, based on the biomes they are built in
Endermen have been spotted in the Nether
Removed Herobrine