From Helm 3 to Helm 4: What Changed, What Breaks and the Helm 3 EOL Timeline
Helm 4 manages Helm 3 charts and releases unchanged; what breaks are scripts, plugins and post-renderers, and Helm 3's security support ends on February 10, 2027. We run Helm 3.22 and Helm 4.3 side by side and look with real output at server-side apply latching, how mixing the two versions undoes server-side apply, flag and log changes, post-renderers becoming plugins, the experimental Chart v3 and a Helm 2 era chart, and finish with a migration checklist.
15 Nov 2026
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12 min
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6
