# Minestom 1.21.10
The 1.21.10 (including 1.21.9) branch has now been merged, thanks to all who tested and contributed to it!

## Java 25
Minestom tracks the latest LTS version of Java. Since Java 25 has been released, it is now the minimum required version of Java to use Minestom. **To use Java 25 you must be on IntelliJ IDEA 2025.2 or higher**.

In gradle (Kotlin), you can set the Java version as such:

```kotlin
java {
    toolchain {
        languageVersion.set(JavaLanguageVersion.of(25))    
    }
}
```

## New in Minecraft
This is a new segment to these release notes, a high level description of how some of the new Minecraft features appear in Minestom:

* Mannequins and Copper Golems are now spawnable with the associated `EntityType` and `MannequinMeta`/`CopperGolemMeta`.
	* **Note:** Some fields from PlayerMeta were moved to the common AvatarMeta between player/mannequin. Offsets may have changed for those editing metadata manually for player entities. 
* Object text components may be used with the adventure API, see [Javadocs](https://jd.advntr.dev/api/4.25.0/net/kyori/adventure/text/ObjectComponent.html).
* The server code of conduct may be sent during configuration with the `CodeOfConductPacket`, at which point you should block the `AsyncPlayerConfigurationEvent` until receiving a `ClientAcceptCodeOfConductPacket`.

## Misc Changes
* The `IChunkLoader` interface has been renamed to `ChunkLoader`.
* Minestom now tracks the server and client connection states separately, and play->configuration state changes only occur between ticks. These changes significantly improve stability when reentering the configuration phase from play. As such, `PlayerConnection#getConnectionState` has been fatally deprecated in favor `#getServerState` and `#getClientState`. When updating, `#getConnectionState` can be translated directly into `#getClientState` to preserve prior behavior. However, some logic may benefit from being side-state aware around configuration swaps.
* Block collision and occlusion shapes are now distinct, they can be accessed with `myBlock.registry().collisionShape()` and `myBlock.registry().occlusionShape()` respectively.
* `PlayerChangeHeldSlotEvent#getOldSlot` now returns a byte (inline with other methods about player held slots) instead of an int.
* The `ResourceLocation` argument now uses an Adventure Key instead of a raw string.
* Adventure API, Key, and NBT are exported as transitive dependencies of Minestom.
* Fastutil is no longer exported as a transitive dependency of Minestom.

## Misc Future Tasks
* Receiving transfers and correctly processing entity passenger/vehicle offsets remain as TODO items from 1.20.6.
* API to send and automatically wait for code of conduct acceptance from 1.21.9.