Java Edition 15w34b

15w34b is the eleventh snapshot for 1.9, which was released to fix some bugs from and extend features of 15w34a.

This version was previously removed from the launcher for some time, but was added back in September 2018.

Blocks

 * Command blocks
 * Improved handling of flow with failing commands.
 * 2 new settings - Unconditional and Conditional.
 * Defaults to unconditional.
 * When conditional is set, it will only execute when the command block behind it was successful in execution.
 * Now supports tab auto-completion.

Items

 * Armor
 * Armor points now depend on armor durability.
 * When armor reaches half durability, armor points will go to 1 (half an armor bar).

Mobs

 * General
 * Give off brown heart particles when hurt.
 * The amount depends on the damage dealt.

Non-mob entities

 * Minecarts with command blocks
 * Now have the impulse command block variant texture.

General

 * Attributes
 * New 'Attack Speed' attribute,, measuring fully-charged attacks per second. Base is 4.0, meaning the bar refills in 0.25s.
 * Swords, pickaxes, and shovels have a modifier of -2.75, resulting in a value of 1.25 (bar refilling in 0.8s).
 * Axes have a modifier of -3.2, resulting in a value of 0.8 (bar refilling in 1.25s).
 * The effect increases the attack speed by 10%, while  decreases it by 10%.

Video
Video made by slicedlime: