Minecraft Update Video: Snapshot 24w 21A for Minecraft 1.21

15-Year Minecraft Birthday Celebrations

• Free capes for the anniversary
  • Redeem available now, visible for Java users on July 8th
• Day 5: Merchandise drop and $500 gift card giveaway
• Day 6: Free 15-year anniversary map on Minecraft Marketplace
  • High-quality map made with Orville Studios
• Day 7: Free party supplies add-on pack for Bedrock

Piston Sound Changes

• Volume lowered due to feedback
  • Quieter up close and fades faster with distance
• Potential future adjustments to sound

Data-Driven Jukebox Changes

• Jukebox customizable via data packs
  • Example: Heart of the Sea as a record disc
  • Command adds a jukebox playable tag
  • Custom music and sound events can be defined
  • In-game data for record discs includes song length and comparator output

Entity Portals and Game Rules

• New game rule: "entities with passengers can use portals"
  • Default set to false
  • Enabling allows mounted entities to go through portals
• Other Nether portal fixes
  • Non-linked portals no longer block item transport through portals

New Command Selector

• New @n selector for entity-based commands
  • Simplifies selecting single entities

Server and Multiplayer Improvements

• Pause menu links to server-provided links
• Enhanced disconnect screens with detailed error info and bug reporting
• Server links button added to interface
• Realms improvements
  • Any player in a realm can upgrade the world
  • Online players in a realm displayed with head icons and names

Trial Chambers

• Less likely to generate in deep dark biome
• New sound for rejected looting attempts

Animal Panic Tag Lists

• Animal panic behavior based on predefined damage sources
  • Example: polar bears, pandas, wolves

Miscellaneous Changes

• Copper doors and waxed variants now connect correctly
• Bolt armor trim smithing template duplicable with waxed copper blocks
• THS enchantment effect applies to attackers
• Under-the-hood attribute changes and tag renames

Conclusion

• Encourages leaving a like and subscribing for future updates