Question 1

What happens when Plone reaches end of life?

Accepted Answer

When Plone reaches end of life, it stops receiving security patches, bug fixes, and new features. Currently, 4 Plone versions are already EOL. The latest supported version is Plone 6.1, maintained until December 31, 2027. Running an EOL version exposes your systems to unpatched security vulnerabilities with no official fix available.

Question 2

Is Plone 6.1 still supported?

Accepted Answer

Yes. Plone 6.1 is actively supported until December 31, 2027. It receives security patches and bug fixes. Check the version table above for the full list of supported Plone releases and their exact end-of-life dates.

Question 3

Is it safe to use Plone after end of life?

Accepted Answer

No. Running Plone after EOL is not safe for production systems. Once a version reaches end of life, newly discovered CVEs are published publicly but never patched — leaving your systems permanently exposed. The only safe path is upgrading to an actively supported Plone release.

Question 4

How to upgrade from Plone 5.2 to Plone 6.x?

Accepted Answer

To upgrade Plone from 5.2 to 6.1: (1) review the official migration guide for breaking changes, (2) test your application against the new version in a staging environment, (3) update dependencies that have version constraints, (4) run your full test suite, (5) deploy with a rollback plan. The earlier you start, the more time you have to resolve compatibility issues before EOL.

Question 5

When is the next Plone LTS version?

Accepted Answer

Not all Plone releases have a designated LTS status. Check the version table above — LTS releases are marked with an "LTS" badge. Refer to the official Plone release policy for information on upcoming long-term support versions.

Question 6

How long does Plone support each version?

Accepted Answer

On average, Plone supports each release for approximately 71 months (~5.9 years).  The exact EOL date for each version is listed in the table above.

Version	Released	Active support	EOL date	Until EOL	Latest	CVEs	Status
6.1	Feb 7, 2025	—	Dec 31, 2027	in 570d	6.1.4	—	Active
6.0	Dec 12, 2022	Mar 27, 2025	Dec 31, 2027	in 570d	6.0.15	—	Active
5.2	Jul 10, 2019	Oct 31, 2023	Oct 31, 2024	586d ago	5.2.15	—	EOL
5.1	Feb 5, 2018	Oct 2, 2020	Dec 12, 2022	1275d ago	5.1.7	—	EOL
5.0	Sep 27, 2015	Feb 7, 2019	Dec 12, 2022	1275d ago	5.0.10	—	EOL
4.3	Apr 6, 2013	Aug 28, 2020	Dec 12, 2022	1275d ago	4.3.20	—	EOL

Plone End of Life Dates

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