Alpha 0.13.0[2] is an upcoming update to Minecraft Pocket Edition that will be released "a lot sooner than you think"[1].
Additions
General
- Change GUI size option
- Particles
happyVillager
- Added message when attempting to build past level 127
Blocks and items
- Redstone-related blocks
- Redstone
- Redstone lamps
- Redstone torches
- Levers
- Tripwire hooks
- 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
Creative inventory additions
- Spawn eggs
- Rabbit
- Iron doors
Mobs
Changes
General
- Graphics
- Light is now emitted from below the Nether
- Removed the
Coralmaterial which served no purpose[3] - 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)[4]
- 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
Non-mob entities
- Are now as fast as sprinting
- Will not deplete Hunger