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IBM Semeru Runtime Certified Edition for z/OS refreshes

News


Abstract

The latest refresh of IBM® Semeru Runtime Certified Edition for z/OS® is available.

Content

Releases are available every quarter, with interim releases in between:

  • Quarterly releases: Contain the latest OpenJDK version, IBM features and fixes, including security fixes.
  • Interim releases: Contain the latest OpenJDK monthly update, IBM fixes, including security fixes, that are additional to the previous quarterly release.

The interim releases can be one of the following types of updates (indicated in brackets in the Latest release column):

  • OpenJDK monthly update
  • IBM-only update
  • Interim update - contains both OpenJDK monthly updates and IBM fixes

For more information about release numbering, see Semeru Runtimes getting started.

The following table shows the latest available release and the OpenJDK version on which the release is based.

Latest releaseRelease dateOpenJDK versionFixes list
17.0.20.10 (Interim)September 202617.0.20Version 17
21.0.12.10 (Interim)September 202621.0.12Version 21
25.0.4.10 (Interim)September202625.0.4Version 25

Note: Support for IBM® Semeru Runtime Certified Edition for z/OS® 11 has ended unless covered by extended support or embedded in an IBM product that has not reached its own end of service date. Lifecycle details of IBM Semeru Runtime Certified Edition for z/OS, Version 11 onwards can be obtained from IBM’s official product lifecycle policy documentation. End of service dates for all IBM software products are listed here.

Documentation

Documentation for quarterly releases is available in IBM Documentation, with late-breaking information in a separate support page, as shown in the following table.

IBM Documentation is not updated for interim releases. When the latest release is an interim one, the documentation updates, if any, are temporarily summarized here before being added to IBM Documentation for the next quarterly refresh.

 
 Version 17
What's new (IBM Documentation)What’s new
Late-breaking informationIBM Semeru Runtime Certified Edition for z/OS 17: Supplementary documentation
 
 Version 21
What's new (IBM Documentation)What’s new
Late-breaking informationIBM Semeru Runtime Certified Edition for z/OS 21: Supplementary documentation
 
 Version 25
What's new (IBM Documentation)What’s new
Late-breaking informationIBM Semeru Runtime Certified Edition for z/OS 25: Supplementary documentation
 
 

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Comparative OpenJDK versions

The following tables indicate the OpenJDK version that the IBM SDK is based on.

Version 25

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Release dateIBM SDK 25OpenJDK version
2026 September25.0.4.10 (interim)25.0.4.1
2026 September25.0.4.025.0.4
2026 June25.0.3.025.0.3
2026 April25.0.1.025.0.1

Version 21

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Release dateIBM SDK 21OpenJDK version
2026 September21.0.12.10 (interim)21.0.12.1
2026 September21.0.12.021.0.12
2026 June21.0.11.021.0.11
2026 April21.0.10.1 (interim)21.0.10
2026 March21.0.10.021.0.10
2025 December21.0.9.121.0.9
2025 August21.0.8.021.0.8
2025 June21.0.7.021.0.7
2025 February21.0.6.021.0.6
2024 NovemberInitial release21.0.4

Version 17

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Release dateIBM SDK 17OpenJDK version
2026 September17.0.20.10 (interim)17.0.20.1
2026 September17.0.20.017.0.20
2026 June17.0.19.017.0.19
2026 March17.0.18.017.0.18
2025 December17.0.17.117.0.17
2025 August17.0.16.017.0.16
2025 June17.0.15.017.0.15
2025 March17.0.14.017.0.14
2024 December17.0.13.017.0.13
2024 September17.0.12.117.0.12
2024 June17.0.11.017.0.11
2024 March17.0.10.017.0.10
2023 December17.0.9.017.0.9
2023 AugustInitial release17.0.7

Version 11

 
Release dateIBM SDK OpenJDK version
2026 March11.0.30.011.0.30
2025 December11.0.29.111.0.29
2025 August11.0.28.011.0.28
2025 June11.0.27.011.0.27
2025 March11.0.26.011.0.26
2024 December11.0.25.011.0.25
2024 September11.0.24.111.0.24
2024 June11.0.23.011.0.23
2024 February11.0.22.011.0.22
2023 December11.0.21.011.0.21
2023 October11.0.20.111.0.20
2023 September11.0.19.111.0.19
2023 June11.0.19.011.0.19
2023 February11.0.18.011.0.18
2022 November11.0.17.011.0.17
2022 September11.0.16.011.0.16
2022 June11.0.15.011.0.15
2022 March11.0.14.111.0.14
2021 NovemberInitial release11.0.12

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Document Information

Modified date:
16 September 2026

UID

ibm16516454

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