We are pleased to announce the general availability of IBM^® Semeru Runtimes^™ 3Q25 quarterly updates for Open Edition and Certified Edition (non-z/OS multi-platforms). These releases are based on Eclipse OpenJ9 0.53.0 and OpenJDK jdk8u462-b08 (Open Edition only), jdk-11.0.28+6, jdk-17.0.16+8 and jdk-21.0.8+9 respectively.  The binaries are available on our standard distribution sites as on Jul 25, 2025. With these releases, IBM Semeru Runtimes (Open Edition and Certified Edition) for multi-platforms contain the latest CPU and security fixes from the OpenJDK Jul’25 updates.

Key Contents in the 3Q25 Quarterly Update of IBM Semeru Runtimes (Open Edition and Certified Edition):

• OpenSSL native cryptographic support is added for the Password based key derivation (PBKDF2) algorithm, providing improved cryptographic performance.
• OpenSSL 3.5.1 is now supported and bundled on all platforms. Refer to What's New section of the release notes to learn more about how to use (or skip) the bundled OpenSSL in IBM Semeru Runtimes.
• Offheap support is added for the balanced GC policy.
• Support for Red Hat Enterprise Linux (RHEL) 10.
• Support for OpenJCEPlus security provider for non-FIPS mode.

Download Links:

• IBM Semeru Runtime Open Edition v8.0.462, v11.0.28, v17.0.16 and v21.0.8 are available at IBM Semeru Runtimes Downloads Website.
• IBM Semeru Runtime Certified Edition v11.0.28.0, v17.0.16.0 and v21.0.8.0 are available at Java Information Manager (IBM Only Access) as well as IBM Semeru runtimes Download Website.
• IBM Semeru Runtime Certified Edition is also available at Adoptium Marketplace. (The downloads of Certified Edition at Adoptium Marketplace will be available shortly)

Additional information:

• What's New in OpenJ9 0.53.0
• IBM Semeru Runtimes Release Notes
  • Eclipse OpenJ9 Release Notes
  • OpenJDK Release Notes (via the https://foojay.io website)
• IBM Semeru Runtimes Security Guide
• Refer to Getting Started for more information on IBM Semeru Runtimes

#releaseannouncement #java #semeruruntimes