Longhorn 1.9 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
Longhorn 1.9 is actively supported. It reaches end of life on 27 Nov 2026.
110 days of security support left
1.9.2 latest release
80% of this branch's supported lifetime has elapsed — 27 May 2025 → 27 Nov 2026.
Support timeline
Official dates from the Longhorn release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 27 May 2025 | — |
| End of life (scheduled) | 27 Nov 2026 | in 110 days |
| Latest release | 1.9.2 · 24 Sept 2025 | current |
How much runway a newer branch buys
Moving to Longhorn 1.12 extends security support by about 370 days.
| Branch | End of life | Days left | vs 1.9 |
|---|---|---|---|
| Longhorn 1.12 | 2 Dec 2027 | 480 | +370 days |
| Longhorn 1.11 | 29 Jul 2027 | 354 | +244 days |
| Longhorn 1.10 | 25 Mar 2027 | 228 | +118 days |
| Longhorn 1.9 | 27 Nov 2026 | 110 | this branch |
Frequently asked questions
When does Longhorn 1.9 reach end of life?
Longhorn 1.9 reaches end of life on 27 Nov 2026 — 110 days from now. After that date it receives no security fixes.
Is Longhorn 1.9 still supported?
Yes. Longhorn 1.9 is currently maintained. Latest release: 1.9.2, published 24 Sept 2025.
What happens when Longhorn 1.9 reaches end of life?
Security fixes stop. After 27 Nov 2026 this branch receives no further updates under standard support.
How long do I have to upgrade from Longhorn 1.9?
110 days. Moving to Longhorn 1.12 instead buys roughly 370 more days of security support.