We are pleased to announce the general availability of IBM® Semeru Runtime™ Certified Edition 2Q25 quarterly updates for non-z/OS (multi-platforms). These releases are based on Eclipse OpenJ9 0.51 and OpenJDK jdk-11.0.27+6, jdk-17.0.15+6 and jdk-21.0.7+6 respectively.  The binaries are available on our standard distribution sites as on May 09, 2025. With these releases, IBM Semeru Runtime Certified Edition (multi-platforms) contains the latest CPU and security fixes from the OpenJDK Apr’25 updates.

Key Contents in the 2Q25 Quarterly Update of IBM Semeru Runtime Certified Edition:

• This release supports IBM z17™ for Linux on IBM Z platform. Read more about unlocking IBM z17 Java Performance with IBM Semeru Runtimes here.
• Support for JDK Flight Recorder (JFR) is made available for all platforms starting from IBM Semeru Runtimes v11+.
• Read more about features and notable changes delivered in OpenJ9 0.51 here which are part of IBM Semeru Runtime Certified Edition 2Q25 quarterly update.

Download Links:

• IBM Semeru Runtime Certified Edition v11.0.27.0, v17.0.15.0 and v21.0.7.0 are available at Java Information Manager (IBM Only Access).
• IBM Semeru Runtime Certified Edition v11.0.27.0, v17.0.15.0 and v21.0.7.0 are available at IBM Semeru Runtimes Download Website.
• IBM Semeru Runtime Certified Edition v11.0.27.0, v17.0.15.0 and v21.0.7.0 are available at Adoptium Marketplace.

Additional information

• What's New in OpenJ9 0.51
• IBM Semeru Runtimes Release Notes
  • Eclipse OpenJ9 Release Notes
  • OpenJDK Release Notes (via the https://foojay.io website)
• Refer to Getting Started for more information on IBM Semeru Runtimes

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