Java 25 has 17 new features, six of which are at some level of preview. It also removes support for 32-bit x86, with the team stating that "the cost of maintaining this port outweighs the benefits ...

In JDK 24, this capability was introduced to reduce the size of object headers in the HotSpot JVM from between 96 bits and 128 bits down to 64 bits on 64-bit architectures.