Bedrock Edition 1.4.0

1.4 is an upcoming update to Bedrock Edition with no such release date, originally set to be released as 1.3. It will add the experimental Plutonium Mode.

Additions

 * Plutonium mode
 * 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
 * Tridents can now be enchanted with Mending and Unbreaking
 * Added an animation when using Riptide in first person perspective
 * Players can now ride the skeleton horses on the bottom of oceans
 * Drowned now spawn with a chance of holding a Nautilus Shell
 * Updated the Riptide spin texture