Java 27 was released on September 15, 2026, delivering nine JEPs, four of them final, with four preview features continuing to mature and one JEP remaining an incubator feature, according to JetBrains…
JetBrains' September 2026 Java Annotated Monthly highlights the release of JDK 27, which includes nine JEPs, with compact object headers enabled by default (JEP 534) reducing heap usage by 10%–20% and…
JDK 27, released on September 15, 2026, by Oracle, now enables post-quantum TLS by default, reduces object header size by 25% (from 96 to 64 bits), and makes G1 the universal garbage collector, with S…
OpenJDK elevated JEP 539 (Strict Field Initialization in the JVM, Preview) and JEP 401 (Value Objects, Preview) to Targeted for JDK 28, while JEP 535 (Shenandoah GC: Generational Mode by Default) move…