Kirby

Kirby

Server App

Kirby 5 is the newest actively maintained release, currently at patch 5.5.3. 2 of 21 tracked cycles remain supported. The next cycle scheduled to reach end-of-life is 4, on June 23, 2027.

Latest version

5.5.3

Jul 28, 2026

Actively maintained cycles

2

of 21 tracked

Total cycles tracked

21

since Jan 9, 2012

Support pattern

How Kirby has behaved across the cycles tracked here, rather than what its policy documents state. Useful for judging how much runway a version is likely to have before you commit to it.

Typical support window

35 mo (~3 years)

median of 20 completed cycles

New cycle roughly every

6 months

median gap between releases

Compared with server app

+20 mo

longer than the server app median

Next end of life

287 days

Kirby 4

Support windows are getting shorter: the most recent cycles run about 21 months less than the earlier ones.

Computed from release and end-of-life dates tracked for Kirby. Medians are used rather than averages so one unusually short or long release does not skew the figure. Cycles with no recorded end-of-life date are excluded from the support window.

Release lifecycle

Actively maintainedSecurity support onlyEnd of life
Today
5Latest
5.5.3 · Jul 28, 2026
3.10
EOL Nov 27, 2025
4
4.9.5 · Jul 15, 2026
3.9
EOL Nov 27, 2025
3.8
EOL Jan 16, 2025
3.7
EOL Oct 5, 2024
3.6
EOL Jun 26, 2024
3.5
EOL Nov 15, 2023
3.4
EOL Nov 16, 2021
3.3
EOL Nov 16, 2021
3.2
EOL Nov 16, 2021
3.1
EOL Nov 16, 2021
3.0
EOL Nov 16, 2021
2.5
EOL Jan 1, 2021
2.4
EOL Jan 1, 2021
2.3
EOL Jan 1, 2021
2.2
EOL Jan 1, 2021
2.1
EOL Jan 1, 2021
2.0
EOL Jan 1, 2021
1.1
EOL Feb 1, 2016
1.0
EOL Feb 1, 2016
201220132014201520162017201820192020202120222023202420252026

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