Overview
Since Java 9, OpenJDK ships feature releases every six months (March and September). JDK 27 GA on September 15, 2026 marks the 18th consecutive on-time release, enabling predictable enterprise upgrade planning.
Timeline
- 2026-09-15: JDK 27 GA — nine JEPs, four previews, one incubator (2026-09-15-java-27-released)
- 2026-03: JDK 26 GA (prior release)
- Support: Oracle JDK 27 updates until March 2027
Key JEP Themes (JDK 27)
| JEP | Feature | Status |
|---|---|---|
| 527 | Post-quantum hybrid TLS 1.3 | Final |
| 534 | Compact object headers default | Final |
| 533 | Structured concurrency | 7th preview |
| 536 | JFR in-process data redaction | Final |