Releases

AI-analyzed release notes for CNCF graduated and incubating projects.

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Jun 2026Clear ×Project: EnvoyClear ×

Envoyv1.38.2Networking & MessagingJun 10, 2026

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This maintenance release adds HTTP/2 runtime controls and corrects runtime guard override handling. It also announces future removal of the HTTP/2 histogram feature and its runtime guard.

Plan ahead (1)

deprecatedFuture removal of envoy.reloadable_features.http2_record_histogramsremoval date not announced
Applies if envoy.reloadable_features.http2_record_histograms is enabled.
The HTTP/2 histograms and runtime guard controlled by envoy.reloadable_features.http2_record_histograms will be removed in a future Envoy release.

Source ↗

Envoyv1.37.4Networking & MessagingJun 10, 2026

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This release adds HTTP/2 header-statistics histograms and a cookie-size limit, and fixes RTDS runtime guard override removal. The HTTP/2 histogram runtime guard is planned for removal in a future Envoy release.

Plan ahead (1)

deprecatedThe envoy.reloadable_features.http2_record_histograms histograms and runtime guard, planned for future removalremoval date not announced
Applies if you use envoy.reloadable_features.http2_record_histograms.
The HTTP/2 histograms and runtime guard for envoy.reloadable_features.http2_record_histograms will be removed in a future Envoy release.

Source ↗

Envoyv1.36.8Networking & MessagingJun 10, 2026

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A maintenance release corrects RTDS runtime-guard override behavior and adds opt-in HTTP/2 cookie and header capabilities. The existing HTTP/2 histogram capability and its runtime guard are announced for future removal.

Plan ahead (1)

deprecatedenvoy.reloadable_features.http2_record_histograms, future removalremoval date not announced
Applies if you use envoy.reloadable_features.http2_record_histograms.
The histograms and runtime guard controlled by envoy.reloadable_features.http2_record_histograms will be removed in a future Envoy release.

Source ↗

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