A snapshot release is planned on Wednesday, September 28, 2016
I like the addition of the Shulker Box
From the Minecraft 1.11 Wiki:
Crafted using a chest in the middle with 2 Shulker Shells, one above and one on the bottom of it.
Can be held in your inventory. Will show its contents when hovered over in the inventory.
Will show up to 5 slots
Can be placed down and opened like a chest inventory, and has 27 slots.
When destroyed, does not drop contents, but stores them in the block.
Can not be placed inside another box.
Can be mined by hand
Can be used with hoppers, droppers and dispensers, just like any other item.
A dispenser will place the shulker box on the ground
Break into item form when pushed with a piston.
When opened, the top will spin up, similar to a Shulker opening.
Can be placed any direction, like Shulkers.