A delicious snapshot appears! This snapshot introduces some tweaks to the raw ore textures, a few copper changes, and the introduction of noodle caves in the Caves & Cliffs Preview datapack.

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Changes in 21w17a

Small dripleaves can now also be placed on moss blocks
Copper ore drops 2-3 raw copper when mined, or more when using a tool enchanted with Fortune
Copper blocks are now crafted from 9 copper ingots
Tweaked the texture of raw metal blocks

Minecraft Snapshot 21w17a Texture Comparison New raw ore textures in snapshot 21w17a. Click here for a link to the full resolution image.

Changes to the Caves & Cliffs Preview

Download the updated datapack.

Minecraft Snapshot 21w17a Noodle Caves Noodles caves in snapshot 21w17a. Click here for a link to the full resolution image.

Large Ore Veins have been tweaked
Added thinner, squigglier, and more claustrophobic variant of spaghetti caves

Large Ore Veins

Ore veins are now slightly rarer and slightly smaller (but they are still large!)
The ores in the vein are clumpier and less evenly distributed
If you are lucky you may find a raw ore block in the vein

Bugs fixed in 21w17a

MC-170443 Banner copying recipe ignores existence of other items in crafting grid
MC-187664 World border uses float to determine its size, making some border sizes inaccessible, and cannot be set to 30 million or beyond
MC-201269 Constantly teleporting player to a phantom crashes the game/kicks the player
MC-203570 Candles aren't grouped in the recipe book
MC-203745 Repeated teleport between dimensions causes the entity to duplicate on the client
MC-204031 Waxed Cut Copper (any level of weathered) have two separate recipes in the recipe book
MC-214187 Void platform generates multiple times
MC-214735 Horse disappears when dying while riding it and reloading the world while it's unloaded
MC-214838 Big dripleaf stem remains after breaking a stem or leaf above it
MC-214865 Floating islands world type generates extreme terrain
MC-219155 Fishing line only starts on half distance between the fishing rod and bobber (Apple M1 only)
MC-219840 You cannot unlock the recipe for Mossy Stone Bricks
MC-219842 Recipes for mossy cobblestone and mossy stone bricks aren't grouped
MC-220033 (Parity issue) Hanging Roots can't be waterlogged
MC-221560 Copper/Coal Ore in Deepslate Patches aren't Deepslate Ores
MC-222008 Empty/missing template pool error grammar mistake
MC-222520 Raw and Ore smelting previews aren't grouped together
MC-223055 Amethyst buds and cluster have an unused blockstate
MC-223792 Shrinking world border with center past x/z 29999983 crashes the game