Update 1.1

Update 1.1 (a.k.a. The Discovery Update ) is an upcoming update for Minecraft Pocket Edition confirmed by Jeb on Twitter.

The beta builds have been released, and the current build is Build 1.

General

 * Mobs' movements can now be changed using Add-Ons
 * Adventure Mode
 * Off-hand slot
 * Works for Arrows and Totem of Undying only
 * Smooth Lighting Toggle Option

Blocks

 * Concrete Blocks
 * Concrete Powder Blocks
 * Glazed Terracotta
 * Shulker Box

Items

 * Iron Nuggets
 * Llama Spawn Egg
 * Treasure Maps
 * Totem of Undying

Mobs

 * Llamas
 * Cartographer Villager
 * Vex
 * Vindicator
 * Evoker

Commands

 * New Gamerules
 * DoFireTick
 * DoMobSpawning
 * DoTileDrop
 * Mob Griefing
 * DoEntityDrops
 * KeepInventory
 * DoMobLoot
 * DoDaylightCycle

Generated Structures

 * Woodland Mansion

Enchantments

 * Frost Walker Enchantment
 * Mending Enchantment

General

 * Changes in world generation.
 * CanPlaceOn & CanDestroy are now supported in the '/replaceitem' command
 * /locate command will now find more structures
 * Eating animation can now be seen in third-person camera
 * Worlds will now show a screenshot in the main menu

Blocks

 * New Wool Textures
 * Beds can now be dyed.

Controls

 * Dampened the vertical look speed when using a controller
 * Improved navigation of the settings screen when using a controller
 * The X button can now be used to clear the hotbar on the Creative inventory screen when using a controller
 * Improved controller input when selecting items on the Creative inventory screen

Items

 * Maps are now numbered for easy distinguishing
 * Empty Maps with Compasses have been renamed to Locator Maps to distinguish between Empty Maps without Compasses
 * Improved lead rope physics

Mobs

 * Cave Spiders now attack with poison time based on difficulty

Mechanics

 * New sleeping animation
 * Eating animation can now be seen in third-person camera

Trivia

 * Update 1.1 will be the first major update after the Official Release (Version 1.0) of Minecraft Pocket Edition.