The video discusses 23 changes in Minecraft's 1.17 update, also known as the Caves and Cliffs update. These changes include:
1. Shulker boxes now popping open when destroyed, saving some items.
2. Grass path blocks can now be made with different types of dirt.
3. Lapis Lazuli blocks now have a consistent name.
4. Rails can be placed underwater without breaking.
5. Clocks have been revamped with new shading and colors.
6. Firework rockets can be crafted more easily.
7. Pufferfish effects have been dampened.
8. Minecraft's credits can now be sped up.
9. Suspicious stew can be consumed even with a full hunger bar.
10. A new copper ingot has been added.
11. Fire aspect enchantment is now more useful for monsters.
12. Slimes can now be summoned in larger sizes.
13. Graphical issues with absorption effects have been fixed.
14. Signs now match plank textures.
15. The replace item command has been replaced with "/item replace".
16. Experience orbs now combine to reduce lag.
17. Redstone dust and torches are now at the top of the item list.
18. Dark mode has been added to the start screen.
19. Spectator mode can now see through lava.
20. A new game rule allows players to set the percentage of players needed to sleep.
21. NBT data has been expanded, allowing entities to have visual fire effects.
22. The anvil's character limit for item names has been increased.
23. Minecraft can now run on Java 16, improving performance and modding capabilities.
These changes aim to improve gameplay, graphics, and overall player experience in Minecraft.
Here are the key facts extracted from the text:
1. Minecraft 1.17 update adds a feature that allows Shulker boxes to pop when destroyed, saving some items from danger.
2. Grass path blocks can now be made with dirt, coarse dirt, podzol, and mycelium, in addition to grass.
3. Lapis Lazuli is now called "Block of Lapis Lazuli" to match the naming convention of other minerals.
4. Rails can now be waterlogged, allowing for underwater rollercoasters and preventing them from breaking when water is next to them.
5. The clock item has been updated with new shading and colors.
6. Elytra can now be crafted in a single step using the recipe book.
7. Pufferfish now have a reduced poison effect, making them less deadly to consume.
8. The credits in Minecraft can now be sped up by holding the space bar.
9. Suspicious stew can now be consumed even when the hunger bar is full.
10. A new ingot, Copper, has been added to the game, and can be obtained by killing the Drowned mob.
11. Fire aspect now works on Husks, Zombies, and Zombie Villagers, allowing for baked potatoes to be obtained.
12. Slimes can now be summoned with a maximum size of 128 using a command.
13. The absorption effect and poison now display correctly, with the extra hearts showing their usual yellow texture.
14. Signs now match the plank texture from 1.14.
15. The "replace item" command has been replaced with "/item replace".
16. Experience orbs now merge to reduce entity count and lag.
17. Redstone dust and torches are now prioritized in the Redstone testing world.
18. A dark mode monochromatic start screen is now available in the accessibility settings.
19. Spectator mode now allows players to see through lava.
20. A new game rule, "playersSleepingPercentage", allows players to set the percentage of players needed to sleep for morning to come.
21. Entities can now be given the tag "(HasVisualFire)" to make them appear on fire without taking damage.
22. The character limit for item names has been increased from 35 to 50.
23. Minecraft 1.17 now allows the game to run on Java 16, improving performance and enabling modern features for the modding community.