Hazelcast end of life dates
Hazelcast Platform 5.7 is the newest release line, at 5.7.1 (13 Aug 2026). 2 lines are still supported upstream: 5.7 and 5.6. 10 lines have reached end of life, most recently 5.5 on 30 Jul 2026. 5.6 is next, on 15 Oct 2027.
- Latest release
- 5.7.1
- Supported lines
- 2
- End-of-life lines
- 10
- Next end of life
- 5.6 · 15 Oct 2027
Hazelcast release timeline
All Hazelcast versions and end-of-life dates
| Version | Released | Standard Support | Extended Support | Latest | OSSeva |
|---|---|---|---|---|---|
| Platform 5.7 | 5 months ago(13 May 2026) | Ends in 1 year and 7 months(13 May 2028) | Ends in 3 years and 1 month(13 Nov 2029) | 5.7.1 | – |
| Platform 5.6 | 1 year ago(15 Oct 2025) | Ends in 1 year(15 Oct 2027) | Ends in 2 years and 6 months(15 Apr 2029) | 5.6.2 | – |
| Platform 5.5 | 2 years and 2 months ago(30 Jul 2024) | Ended 2 months ago(30 Jul 2026) | Ends in 1 year and 4 months(30 Jan 2028) | 5.5.10 | – |
| Platform 5.4 | 2 years and 6 months ago(16 Apr 2024) | Ended 6 months ago(16 Apr 2026) | Ends in 1 year(16 Oct 2027) | 5.4.4 | – |
| Platform 5.3 | 3 years and 4 months ago(19 May 2023) | Ended 1 year and 4 months ago(19 May 2025) | Ends in 2 months(19 Nov 2026) | 5.3.8 | – |
| Platform 5.2 | 3 years and 11 months ago(26 Oct 2022) | Ended 1 year and 11 months ago(26 Oct 2024) | Ended 5 months ago(24 Apr 2026) | 5.2.5 | – |
| Platform 5.1 | 4 years and 7 months ago(1 Mar 2022) | Ended 2 years and 7 months ago(1 Mar 2024) | Ended 1 year and 1 month ago(1 Sept 2025) | 5.1.7 | – |
| Platform 5.0 | 5 years ago(22 Sept 2021) | Ended 3 years ago(22 Sept 2023) | Ended 1 year and 6 months ago(22 Mar 2025) | 5.0.5 | – |
| IMDG 4.2 | 5 years and 6 months ago(24 Mar 2021) | Ended 3 years and 6 months ago(24 Mar 2023) | Ended 2 years ago(24 Sept 2024) | 4.2.8 | – |
| IMDG 4.1 | 5 years and 11 months ago(4 Nov 2020) | Ended 3 years and 11 months ago(4 Nov 2022) | Ended 2 years and 5 months ago(4 May 2024) | 4.1.10 | – |
| IMDG 4.0 | 6 years and 8 months ago(4 Feb 2020) | Ended 4 years and 8 months ago(4 Feb 2022) | Ended 3 years and 2 months ago(4 Aug 2023) | 4.0.6 | – |
| IMDG 3.12 | 7 years and 3 months ago(18 Jun 2019) | Ended | Ended | 3.12.13 | – |
Release, End of Standard Support and End of Extended Support dates come from Hazelcast's 'Version Support Windows' article (2 years standard support from a minor's release, then 18 months extended support without patches); latest patch dates come from docs.hazelcast.com release notes (Enterprise patches) or GitHub releases, and IMDG 3.12 has no published dates beyond 'expired' so its eolFrom/eoesFrom are null. Checked 30 Sept 2026. Upstream policy: support.hazelcast.com. “Patched” marks end-of-life lines OSSeva ships signed, backported builds for.
Running an end-of-life Hazelcast version?
OSSeva keeps end-of-life Hazelcast patched with signed builds and backported CVE fixes, documents it for your auditor, and can run it for you, so the upgrade happens on your schedule rather than the project’s.
Hazelcast extended supportHazelcast end of life: common questions
What is the latest Hazelcast version?
5.7.1, released 13 Aug 2026, on the Platform 5.7 line. Other supported lines: 5.6.
When is the next Hazelcast end of life?
Hazelcast 5.6 reaches the end of standard support on 15 Oct 2027. After that date the project stops shipping security fixes for 5.6, and CVEs disclosed later stay unpatched upstream.
Which Hazelcast versions are still supported?
5.7 (until 13 May 2028) and 5.6 (until 15 Oct 2027). Every other line has reached end of life, per the dates in the table above.
Can I get security patches for an end-of-life Hazelcast version?
Yes. OSSeva provides Hazelcast extended support after upstream support ends, on the Patch, Assure and Operate tiers. See Hazelcast extended support for the versions covered.
Still running an end-of-life Hazelcast?
Tell us the versions and the estate size. We will tell you whether to upgrade or keep it patched, and what each costs.