IDL 9.1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
IDL 9.1 reached end of life on 15 Aug 2025. It no longer receives security fixes.
359 days without security patches
Recommended action: upgrade to IDL 9.2. Check your versionidl -e 'print, !version.release'
Support timeline
Official dates from the IDL release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 25 Sept 2024 | — |
| End of life | 15 Aug 2025 | 1.0 years ago |
| Latest release | 9.1.0 · 1 Jul 2024 | final |
Where to go from 9.1
Recommended target: IDL 9.2.
The newest actively supported branch is IDL 9.2 (latest release 9.2.0).
Frequently asked questions
Is IDL 9.1 still safe to use?
IDL 9.1 reached end of life on 15 Aug 2025, 359 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download IDL 9.1?
Yes — the final release (9.1.0) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade IDL 9.1 to?
Upgrade to IDL 9.2, the newest actively supported branch.