The developers have published the first test version of the new Cave update Minecraft 1.17. Update Minecraft 1.17.0.50 is available on Android and adds Amethysts, crude ore, a telescope and much more to the game!

Navigation:
- Amethyst geodes
- Amethysts
- Spyglass
- Crude ore
- Tuf
- Tinted glass
- Experimental features
- Changes
Amethyst geodes
New underground structures consisting of three layers.
- The outer layer consists of smooth basalt
- The middle layer consists of calcite
- The inner hollow layer consists of blooming amethysts, amethyst blocks and buds

Amethysts
Amethysts grow on either side of a blooming amethyst. Include 4 stages of growth:
- Amethyst bud is the first three stages of growth
- The amethyst cluster is the fourth and last stage of the growth of the amethyst bud
An amethyst cluster can be mined with an iron pickaxe or better. It drops 4 amethyst shards or more if the corresponding tool is enchanted with a good luck charm.

Spyglass
Allows to view objects in the distance.
- A spyglass can be created from copper ingots and an amethyst fragment
- While using the telescope, the player's movement slows down
- The "Spyglass Damping" option has been added to the game settings in the "Keyboard and Mouse" section, which allows you to adjust the rotation speed with a telescope

Crude ore
Iron, copper and gold ores have been remade and now raw metals are falling out of them. Raw metals can be melted in a furnace.
- Blocks of unprocessed metals have been added: unprocessed copper, unprocessed iron and unprocessed gold
- Now, instead of blocks, raw metals fall out of the ores, which can be melted in the furnace, as before
- Ore blocks will still be able to be melted down and this means that you will still be able to melt ore from the old worlds

Tuf
A new block generated at a value below Y = 16 in the dungeons, which can be extracted with a pickaxe.

Tinted glass
A new glass block that does not let in rays of light. Mobs cannot see the player through such a glass.
Unlike ordinary glass, this block can be obtained without the Silk Touch enchantment.

Experimental functions
The following innovations are now available in the game without the Caves and Cliffs option in world editing:
- Loose snow
- Luminous lichen
Improvements and bug fixes
In the update, the developers made 72 changes and fixed bugs. Under the spoiler below you will find the main one.
- If you catch an Axolotl with a bucket, then the achievement "I am a marine biologist" will no longer open
- The probability of the appearance of Axolotls has been increased
- Axolotls no longer impose regeneration on themselves after killing a target
- Now, when breeding Axolotls, experience is given
- Cobwebs no longer hang in the air in mines
- The copper surface of the blocks now loses oxidation when struck by lightning in a more random way
- Fixed the operation of horizontally placed lightning rods that did not remove oxidation from copper blocks.
- Copper blocks hit by lightning now lose oxidation, even if there is no lightning rod
- Copper stairs now emit unique footstep sounds in Y values less than 0
- Deep shale, deep shale brick and deep shale tile now give experience from smelting in the furnace
- Crushed slate can now be used as a resource for creating tools, ovens and cooking racks
- If the 'fallDamage' game rule is set to false, then when falling on the dropper, the player will no longer receive damage
- Droppers now have the right names
- Only the tips of stalagmites deal increased fall damage
- Boilers are now filled with water from dripping stalactites a little faster
- The textures of the glowing frames now look the same in Java and Bedrock
- The glowing frame can now signal a red stone
- Fixed lightning rod display in hand
- The blocks connected to the lightning rod now correctly transmit the red stone signal when lightning strikes the lightning rod
- Lush caves are now randomly generated in caves
- Mossy cover now has sound placement
- Bone meal now makes a sound when used
- The sound of walking will now be played at a height less than 0
- Critical hit particles are now generated around the mob, not under it
- Renamed structural blocks will no longer have the wrong data mode when created
- Fixed a bug that caused stalagmites or stalactites to turn into liquid
- If a stalactite is hanging on a drip with a water source at the top, then it will slowly grow as a stalactite and as a stalagmite from below
- The growth rate is random, but very slow, one growth step can take several Minecraft game days
- Fixed a crash that sometimes occurred when deleting an entity with a table (scoreboard) from a level
- Foxes can now walk on loose snow
- Glowing lichen will no longer hang in the air
- Fixed a bug that caused the player to continue slowing down after re-entering the world when receiving a slowdown from freezing
- New burning, freeze and drowning damage sounds have been added.