The current version of Kairos is 4.2.0 (as of 18/08/2026). patchletter checks the official source daily and emails you new releases.
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 4.2.0 | STABLE | 18/08/2026 | Release notes → |
| 4.1.2 | STABLE | 17/06/2026 | Release notes → |
| 4.1.1 | STABLE | 15/06/2026 | Release notes → |
| 4.1.0 | STABLE | 15/05/2026 | Release notes → |
| 4.0.3 | STABLE | 20/03/2026 | Release notes → |
| 4.0.2 | STABLE | 20/03/2026 | Release notes → |
| 4.0.1 | STABLE | 03/03/2026 | Release notes → |
| 4.0.0 | STABLE | 27/02/2026 | Release notes → |
| 3.7.2 | STABLE | 05/02/2026 | Release notes → |
| 3.7.1 | STABLE | 03/02/2026 | Release notes → |
Frequently asked questions
- What is the latest version of Kairos?
- Kairos 4.2.0, released 18/08/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the Kairos release notes?
- The version history above links to the vendor's official release notes where the vendor publishes them. patchletter deliberately stores no vendor full texts.
- How do I get notified about new Kairos updates?
- Tick Kairos off in the catalogue and leave your address. From then on new versions go out by email — one at a time, or bundled in the daily or weekly digest.
An email as soon as a new Kairos version ships
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[](https://patchletter.com/en/software/kairos)https://patchletter.com/badge/kairos.svgAlso available: ?v=eol (end of support) and ?v=cve (actively exploited).
