Java Edition 17w15a

17w15a is the fifth snapshot released for 1.12.

General

 * Advancements
 * Added descriptions to advancements & changed some titles
 * The Adventuring Time achievement has been made into an advancement


 * Narrator
 * Added a toast notification for toggling the narrator
 * Added the option to toggle narrator between: off, chat & system, chat only, system messages only

General

 * Recipe book
 * The pop-up that shows up upon unlocking new recipes now has an icon showing the items that can be crafted with the new recipes

Blocks

 * Bed
 * Added colored beds which can be crafted with colored wool or by dying a white bed
 * Beds now bounce the player like slimeblocks, albeit much less
 * Beds now reduce (but not negate) fall damage when landed on
 * The player can survive a 41 block fall onto a bed
 * Any higher, and the second bounce will deal the remaining amount of damage to kill them
 * The player can create a platform 7~ blocks high beside the bed to land on to prevent death, in which case a player can survive a 44 block fall
 * Beds are now a block entity, and use their 3D item model instead of a 2D item because of the new colors


 * Stairs
 * Made stairs a little more solid, allowing torches, fences, iron bars, glass panes, walls & snow to connect to them properly (albeit only to ones that have a full block side facing towards them)