Java Edition 21w07a

21w07a is the tenth snapshot for Java Edition 1.17, released on February 17, 2021, which adds Grimstone and tweaks ore and cave generation.

Additions

 * Grimstone
 * A new type of stone.
 * Functions identical to cobblestone and blackstone in that grimstone can be used to craft basic tools, furnaces and brewing stands.
 * Can be crafted into: Grimstone Slab, Grimstone Stairs, Grimstone Wall, Polished Grimstone, Polished Grimstone Slab, Polished Grimstone Stairs, Polished Grimstone Wall, Grimstone Bricks, Grimstone Brick Slab, Grimstone Brick Stairs, Grimstone Brick Wall, Grimstone Tiles, Grimstone Tile Slab, Grimstone Tile Stairs, Grimstone Tile Wall and Chiselled Grimstone.

Changes

 * World generation
 * Tweaked huge caves to be more rare and decreased the chance that caves are filled with water
 * Changed ore generation to match the new world height and to add more strategy to mining
 * Tweaked size and positioning of diorite, andesite & granite generation
 * Exception: Diorite and Granite and Dirt no longer generate below y = 0
 * Strongholds are now mostly encased in stone
 * Mineshaft corridors are now supported by log pillars below or chains above when needed


 * Blocks
 * Ores without unique shapes have been given new textures for accessibility reasons
 * Being the most iconic ore, Diamond Ore texture is staying the same
 * Blackstone, Polished Blackstone Bricks, and Cracked Polished Blackstone Bricks have had some minor touch ups


 * Creative inventory
 * The Redstone Tab has been reordered to prioritize highly-used blocks
 * Redstone items/blocks have been grouped and ordered in the following way: Essentials, Unique activators, Miscellaneous, Common activators, Openables