cos end of life dates — full support timeline
12 of 16 tracked cos releases have already reached end of life. The dates below are published support dates, not estimates.
Version support timeline
| Release | Released | End of life | Latest | Status |
|---|---|---|---|---|
| cos-129 LTS | 2026-05-21 | 2028-03-01 | cos-129-19506-299-60 | supported |
| cos-125 LTS | 2025-10-09 | 2027-09-01 | cos-125-19216-532-42 | supported |
| cos-121 LTS | 2025-04-14 | 2027-03-01 | cos-121-18867-528-21 | supported |
| cos-117 LTS | 2024-10-02 | 2026-09-01 | cos-117-18613-675-28 | ends soon |
| cos-113 LTS | 2024-04-15 | 2026-05-12 | cos-113-18244-582-104 | ended |
| cos-109 LTS | 2023-09-27 | 2025-09-24 | cos-109-17800-570-50 | ended |
| cos-105 LTS | 2023-04-03 | 2025-04-01 | cos-105-17412-535-98 | ended |
| cos-101 LTS | 2022-09-15 | 2024-10-21 | cos-101-17162-528-64 | ended |
| cos-97 LTS | 2022-03-29 | 2024-03-27 | cos-97-16919-450-41 | ended |
| cos-93 LTS | 2021-10-18 | 2023-10-24 | cos-93-16623-461-42 | ended |
| cos-89 LTS | 2021-04-07 | 2023-03-01 | cos-89-16108-798-22 | ended |
| cos-85 LTS | 2020-09-24 | 2022-09-01 | cos-85-13310-1498-13 | ended |
| cos-81 LTS | 2020-03-27 | 2022-01-10 | cos-81-12871-1317-8 | ended |
| cos-77 LTS | 2019-09-27 | 2021-04-01 | cos-77-12371-1109-0 | ended |
| cos-73 LTS | 2019-03-25 | 2020-09-05 | cos-73-11647-656-0 | ended |
| cos-69 LTS | 2018-09-18 | 2019-12-01 | cos-69-10895-385-0 | ended |
Who is affected
Anyone running an unsupported cos release. After end of life a version stops receiving security patches, which typically becomes an audit or compliance finding before it becomes an outage. Upgrading to a supported release is the migration path; the table above shows which releases still qualify.
Source
These dates are maintained by endoflife.date/cos, an open community dataset that cites vendor announcements. Verify against the vendor before making a compliance decision.
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