Bedrock Edition 1.4.0

1.4 is an upcoming update to Bedrock Edition set to be released in Q2 2018, originally set to be released as 1.3. It will add the experimental Plutonium Mode.

Additions

 * Plutonium mode

These features are included in previous versions under "Experimental Features"
 * Added drowned mobs
 * New swimming animation
 * Trident and new enchantments
 * Channeling
 * Loyalty
 * Riptide
 * Impaling
 * Stripped wood
 * Slabs and stairs for prismarine, prismarine brick, and dark prismarine

Changes

 * Dolphins can now be given Raw Fish or Raw Salmon and will swim towards the nearest Ocean Ruins or Shipwreck
 * Undead mobs will now sink in water and can walk on the bottom
 * Husks that have sunk in water will now transform into Zombies and Zombies will transform into Drowned
 * Skeleton Horses can now be ridden underwater
 * Skeletons and Strays will switch from ranged to melee attacks while underwater and switch back when out of water
 * Changed the steering of Boats when using keyboard and mouse by pressing W to move forward and S to reverse
 * Improved player swimming at the surface of water
 * Tridents can now be enchanted with Mending and Unbreaking
 * Added an animation when using Riptide in first person perspective
 * Drowned are no longer behind the Experimental Gameplay toggle
 * Drowned now spawn with a chance of holding a Nautilus Shell
 * Nautilus Shells are no longer behind the experimental Gameplay toggle
 * Updated the Riptide spin texture