Pocket Edition v0.13.0 alpha

Alpha 0.13.0 is an upcoming update to Minecraft Pocket Edition that will be released "a lot sooner than you think".

General

 * Change GUI size option
 * Particles

Blocks and items

 * Redstone-related blocks
 * Redstone
 * Redstone lamps
 * Redstone torches
 * Levers
 * Tripwire hooks
 * Tripwire
 * Daylight sensors
 * Pressure plates (stone and wooden)
 * Weighted pressure plates (gold and iron)
 * Buttons (stone and wooden)
 * Detector rails
 * Trapped chests
 * Spruce, birch, jungle, acacia and dark oak wooden doors
 * Iron trapdoors
 * Note blocks

World generation

 * Desert temples

Creative inventory additions

 * Spawn eggs
 * Rabbit
 * Iron doors

Mobs

 * Rabbits
 * Version exclusives :
 * Smaller size
 * Run from the player
 * Can be killed in one shot using a bow
 * Only spawn in forests
 * Can eat crops

General

 * Graphics
 * Light is now emitted from below the Nether
 * Removed the  material which served no purpose
 * Items can now be dragged and dropped within the inventory
 * Hotbar item count is now at the bottom corner of the selected item (if stackable) and has PC text
 * Game data is now expressed in JSON files (see here for an example)
 * Flowers created using bonemeal now depend on the biome

Blocks

 * Stonecutter
 * Removed the crafting ability of the stonecutter. Items previously craft-able using it are now crafted in the crafting table
 * Unavailable in survival. Only available in creative as a decorative block
 * Redstone dust is now placeable
 * String is now placeable
 * Iron doors
 * Now functional
 * Can be crafted in Survival mode

Mobs

 * Ghasts and slimes now have a higher spawn rate
 * Skeletons will run away from wolves

Non-mob entities

 * Boats
 * Are now as fast as sprinting
 * Will not deplete Hunger