rtpengine 13.5 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
rtpengine 13.5 is actively supported. It reaches end of life on 28 Sept 2028.
781 days of security support left
13.5.1.25 latest release
29% of this branch's supported lifetime has elapsed — 26 Sept 2025 → 28 Sept 2028.
Check your versionrtpengine -v
Support timeline
Official dates from the rtpengine release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 26 Sept 2025 | — |
| End of life (scheduled) | 28 Sept 2028 | in 781 days |
| Latest release | 13.5.1.25 · 5 Aug 2026 | current |
How much runway a newer branch buys
Moving to rtpengine 26.1 extends security support by about -759 days.
| Branch | End of life | Days left | vs 13.5 |
|---|---|---|---|
| rtpengine 26.1 | 31 Aug 2026 | 22 | -759 days |
| rtpengine 26.0 | 1 May 2029 | 996 | +215 days |
| rtpengine 13.5 | 28 Sept 2028 | 781 | this branch |
| rtpengine 12.5 | 24 Sept 2027 | 411 | -370 days |
| rtpengine 11.5 | 11 Sept 2026 | 33 | -748 days |
Frequently asked questions
When does rtpengine 13.5 reach end of life?
rtpengine 13.5 reaches end of life on 28 Sept 2028 — 781 days from now. After that date it receives no security fixes.
Is rtpengine 13.5 still supported?
Yes. rtpengine 13.5 is currently maintained. Latest release: 13.5.1.25, published 5 Aug 2026.
What happens when rtpengine 13.5 reaches end of life?
Security fixes stop. After 28 Sept 2028 this branch receives no further updates under standard support.
How long do I have to upgrade from rtpengine 13.5?
781 days. Moving to rtpengine 26.1 instead buys roughly -759 more days of security support.
All rtpengine versions
26.1 supported 26.0 supported 14.1 EOL 2026 14.0 EOL 2026 13.5 supported 13.4 EOL 2025 13.3 EOL 2025 13.2 EOL 2025 13.1 EOL 2025 13.0 EOL 2024 12.5 supported 12.4 EOL 2024 12.3 EOL 2024 12.2 EOL 2024 12.1 EOL 2024 12.0 EOL 2023 11.5 supported 11.4 EOL 2023 11.3 EOL 2023 11.2 EOL 2023 11.1 EOL 2023 11.0 EOL 2022 10.5 EOL 2025 9.5 EOL 2024 8.5 EOL 2023