JEP Tracker
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Diligently tracking and posting any @openjdk.org JEP updates.
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🎯 JEP 544 proposed to target JDK 28
Title: Ahead-of-Time Code Compilation
Type: feature
Component: hotspot / compiler
Release: 28
See openjdk.org/jeps/544
Title: Ahead-of-Time Code Compilation
Type: feature
Component: hotspot / compiler
Release: 28
See openjdk.org/jeps/544
September 18, 2026 at 5:56 PM
🎯 JEP 544 proposed to target JDK 28
Title: Ahead-of-Time Code Compilation
Type: feature
Component: hotspot / compiler
Release: 28
See openjdk.org/jeps/544
Title: Ahead-of-Time Code Compilation
Type: feature
Component: hotspot / compiler
Release: 28
See openjdk.org/jeps/544
✏️ JEP 8383849 was drafted
Title: TLS Support for the QUIC Transport (Preview)
Type: feature
Component: security / javax.net.ssl
See openjdk.org/jeps/8383849
Title: TLS Support for the QUIC Transport (Preview)
Type: feature
Component: security / javax.net.ssl
See openjdk.org/jeps/8383849
September 17, 2026 at 2:56 PM
✏️ JEP 8383849 was drafted
Title: TLS Support for the QUIC Transport (Preview)
Type: feature
Component: security / javax.net.ssl
See openjdk.org/jeps/8383849
Title: TLS Support for the QUIC Transport (Preview)
Type: feature
Component: security / javax.net.ssl
See openjdk.org/jeps/8383849
🎓 JEP 544 moved to candidate
Title: Ahead-of-Time Code Compilation
Type: feature
Component: hotspot / compiler
See openjdk.org/jeps/544
Title: Ahead-of-Time Code Compilation
Type: feature
Component: hotspot / compiler
See openjdk.org/jeps/544
September 10, 2026 at 3:35 PM
🎓 JEP 544 moved to candidate
Title: Ahead-of-Time Code Compilation
Type: feature
Component: hotspot / compiler
See openjdk.org/jeps/544
Title: Ahead-of-Time Code Compilation
Type: feature
Component: hotspot / compiler
See openjdk.org/jeps/544
✅ JEP 541 is now complete
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
September 9, 2026 at 8:35 PM
✅ JEP 541 is now complete
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
🏗️ JEP 540 integrated to JDK 28
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
September 9, 2026 at 5:35 PM
🏗️ JEP 540 integrated to JDK 28
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
✅ JEP 542 is now complete
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
September 9, 2026 at 5:35 PM
✅ JEP 542 is now complete
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
🎓 JEP 543 moved to candidate
Title: Structured Concurrency
Type: feature
Component: core
See openjdk.org/jeps/543
Title: Structured Concurrency
Type: feature
Component: core
See openjdk.org/jeps/543
September 8, 2026 at 7:35 PM
🎓 JEP 543 moved to candidate
Title: Structured Concurrency
Type: feature
Component: core
See openjdk.org/jeps/543
Title: Structured Concurrency
Type: feature
Component: core
See openjdk.org/jeps/543
🏗️ JEP 542 integrated to JDK 28
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
September 1, 2026 at 4:32 PM
🏗️ JEP 542 integrated to JDK 28
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
✏️ JEP 8384867 was drafted
Title: Lazy Constants (Fourth Preview)
Type: feature
Component: core / lang
See openjdk.org/jeps/8384867
Title: Lazy Constants (Fourth Preview)
Type: feature
Component: core / lang
See openjdk.org/jeps/8384867
August 31, 2026 at 7:32 AM
✏️ JEP 8384867 was drafted
Title: Lazy Constants (Fourth Preview)
Type: feature
Component: core / lang
See openjdk.org/jeps/8384867
Title: Lazy Constants (Fourth Preview)
Type: feature
Component: core / lang
See openjdk.org/jeps/8384867
🏗️ JEP 541 integrated to JDK 28
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
August 28, 2026 at 6:32 PM
🏗️ JEP 541 integrated to JDK 28
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
🎯 JEP 542 updated to target JDK 28
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
August 27, 2026 at 2:32 PM
🎯 JEP 542 updated to target JDK 28
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
🎯 JEP 541 updated to target JDK 28
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
August 24, 2026 at 1:32 PM
🎯 JEP 541 updated to target JDK 28
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
✏️ JEP 8390768 was drafted
Title: Integrate BSD port into OpenJDK Mainline
Type: process
See openjdk.org/jeps/8390768
Title: Integrate BSD port into OpenJDK Mainline
Type: process
See openjdk.org/jeps/8390768
August 20, 2026 at 12:32 PM
✏️ JEP 8390768 was drafted
Title: Integrate BSD port into OpenJDK Mainline
Type: process
See openjdk.org/jeps/8390768
Title: Integrate BSD port into OpenJDK Mainline
Type: process
See openjdk.org/jeps/8390768
📦 JEP 523 delivered to JDK 27
Title: Make G1 the Default Garbage Collector in All Environments
Type: feature
Component: hotspot / gc
Release: 27
See openjdk.org/jeps/523
Title: Make G1 the Default Garbage Collector in All Environments
Type: feature
Component: hotspot / gc
Release: 27
See openjdk.org/jeps/523
August 19, 2026 at 1:32 PM
📦 JEP 523 delivered to JDK 27
Title: Make G1 the Default Garbage Collector in All Environments
Type: feature
Component: hotspot / gc
Release: 27
See openjdk.org/jeps/523
Title: Make G1 the Default Garbage Collector in All Environments
Type: feature
Component: hotspot / gc
Release: 27
See openjdk.org/jeps/523
📦 JEP 531 delivered to JDK 27
Title: Lazy Constants (Third Preview)
Type: feature
Component: core / lang
Release: 27
See openjdk.org/jeps/531
Title: Lazy Constants (Third Preview)
Type: feature
Component: core / lang
Release: 27
See openjdk.org/jeps/531
August 19, 2026 at 7:32 AM
📦 JEP 531 delivered to JDK 27
Title: Lazy Constants (Third Preview)
Type: feature
Component: core / lang
Release: 27
See openjdk.org/jeps/531
Title: Lazy Constants (Third Preview)
Type: feature
Component: core / lang
Release: 27
See openjdk.org/jeps/531
📦 JEP 533 delivered to JDK 27
Title: Structured Concurrency (Seventh Preview)
Type: feature
Component: core
Release: 27
See openjdk.org/jeps/533
Title: Structured Concurrency (Seventh Preview)
Type: feature
Component: core
Release: 27
See openjdk.org/jeps/533
August 19, 2026 at 6:32 AM
📦 JEP 533 delivered to JDK 27
Title: Structured Concurrency (Seventh Preview)
Type: feature
Component: core
Release: 27
See openjdk.org/jeps/533
Title: Structured Concurrency (Seventh Preview)
Type: feature
Component: core
Release: 27
See openjdk.org/jeps/533
🎯 JEP 542 proposed to target JDK 28
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
August 19, 2026 at 5:32 AM
🎯 JEP 542 proposed to target JDK 28
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
Title: PEM Encodings of Cryptographic Objects
Type: feature
Component: security / security
Release: 28
See openjdk.org/jeps/542
📦 JEP 537 delivered to JDK 27
Title: Vector API (Twelfth Incubator)
Type: feature
Component: core
Release: 27
See openjdk.org/jeps/537
Title: Vector API (Twelfth Incubator)
Type: feature
Component: core
Release: 27
See openjdk.org/jeps/537
August 19, 2026 at 2:32 AM
📦 JEP 537 delivered to JDK 27
Title: Vector API (Twelfth Incubator)
Type: feature
Component: core
Release: 27
See openjdk.org/jeps/537
Title: Vector API (Twelfth Incubator)
Type: feature
Component: core
Release: 27
See openjdk.org/jeps/537
📦 JEP 536 delivered to JDK 27
Title: JFR In-Process Data Redaction
Type: feature
Component: hotspot / jfr
Release: 27
See openjdk.org/jeps/536
Title: JFR In-Process Data Redaction
Type: feature
Component: hotspot / jfr
Release: 27
See openjdk.org/jeps/536
August 18, 2026 at 9:32 PM
📦 JEP 536 delivered to JDK 27
Title: JFR In-Process Data Redaction
Type: feature
Component: hotspot / jfr
Release: 27
See openjdk.org/jeps/536
Title: JFR In-Process Data Redaction
Type: feature
Component: hotspot / jfr
Release: 27
See openjdk.org/jeps/536
🎯 JEP 540 updated to target JDK 28
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
August 17, 2026 at 8:32 PM
🎯 JEP 540 updated to target JDK 28
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
🎯 JEP 541 proposed to target JDK 28
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
August 13, 2026 at 11:32 PM
🎯 JEP 541 proposed to target JDK 28
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
Title: Deprecate the macOS/x64 Port for Removal
Type: feature
Release: 28
See openjdk.org/jeps/541
📦 JEP 534 delivered to JDK 27
Title: Compact Object Headers by Default
Type: feature
Component: hotspot / runtime
Release: 27
See openjdk.org/jeps/534
Title: Compact Object Headers by Default
Type: feature
Component: hotspot / runtime
Release: 27
See openjdk.org/jeps/534
August 11, 2026 at 7:32 PM
📦 JEP 534 delivered to JDK 27
Title: Compact Object Headers by Default
Type: feature
Component: hotspot / runtime
Release: 27
See openjdk.org/jeps/534
Title: Compact Object Headers by Default
Type: feature
Component: hotspot / runtime
Release: 27
See openjdk.org/jeps/534
🎯 JEP 540 proposed to target JDK 28
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
August 7, 2026 at 6:37 PM
🎯 JEP 540 proposed to target JDK 28
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
Title: Simple JSON API (Incubator)
Type: feature
Component: core
Release: 28
See openjdk.org/jeps/540
✏️ JEP 8389764 was drafted
Title: Lazy Constants (Fourth Preview)
Type: feature
Component: core / lang
See openjdk.org/jeps/8389764
Title: Lazy Constants (Fourth Preview)
Type: feature
Component: core / lang
See openjdk.org/jeps/8389764
August 5, 2026 at 1:37 PM
✏️ JEP 8389764 was drafted
Title: Lazy Constants (Fourth Preview)
Type: feature
Component: core / lang
See openjdk.org/jeps/8389764
Title: Lazy Constants (Fourth Preview)
Type: feature
Component: core / lang
See openjdk.org/jeps/8389764
🎯 JEP 535 updated to target JDK 28
Title: Shenandoah GC: Generational Mode by Default
Type: feature
Component: hotspot / gc
Release: 28
See openjdk.org/jeps/535
Title: Shenandoah GC: Generational Mode by Default
Type: feature
Component: hotspot / gc
Release: 28
See openjdk.org/jeps/535
August 4, 2026 at 4:32 PM
🎯 JEP 535 updated to target JDK 28
Title: Shenandoah GC: Generational Mode by Default
Type: feature
Component: hotspot / gc
Release: 28
See openjdk.org/jeps/535
Title: Shenandoah GC: Generational Mode by Default
Type: feature
Component: hotspot / gc
Release: 28
See openjdk.org/jeps/535