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Releases

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

URGENCY
AllAction neededCheck if affectedPlan ahead
KIND
AllSecurityBreakingDeprecated
Category
AllAI & MLCI/CD & App DeliveryKubernetes CoreNetworking & MessagingObservabilityOrchestration & ManagementProvisioning & RuntimeSecurityStorage & Data
Prometheusv3.14.0ObservabilityAug 18, 2026
ACTION 1CHECK 1PLAN 1OTHER 39View full analysis

A maintenance release with an API deprecation, operator-visible removals and default changes, new capabilities, performance improvements, and correctness fixes across discovery, PromQL, TSDB, and other components. No security advisories or explicitly described security vulnerabilities are included.

Action needed (1)

  • breakingDefault support for PromQL duration expressions

    Duration expressions are enabled by default in PromQL. The promql-duration-expr feature flag is now a no-op.

Check if affected (1)

  • breakingThe __meta_hetzner_datacenter label, removed

    Applies if you use hcloud targets.

Plan ahead (1)

  • deprecatedThe stats query parameter, deprecated for other valuesremoval date not announced

    Applies if you set stats to a value other than true or all.

Source ↗
OpenTelemetryv0.157.0ObservabilityJul 21, 2026
CHECK 1PLAN 1OTHER 11View full analysis

This release adds configuration and feature-gate capabilities, corrects defects, changes histogram bucket values, and introduces the configstorage module. It also removes or deprecates API symbols, with no security issues or advisories identified.

Check if affected (1)

  • breakingThe BalancerName function, removed

    Applies if you use BalancerName.

Plan ahead (1)

  • deprecatedThe WithForceUnmarshaler option, deprecated

    Applies if you use WithForceUnmarshaler.

Source ↗
Jaegerv2.20.0ObservabilityJul 20, 2026
ACTION 1CHECK 3PLAN 1OTHER 27View full analysis

A release with backend compatibility removals, forced migrations, new configuration and CLI capabilities, and correctness fixes across storage, extensions, and related components. It does not disclose security advisories or security-specific flaws.

Action needed (1)

  • breakingTemplate creation through esclient

    Template creation moves to esclient, and legacy mapping rendering is retired.

Check if affected (3)

  • breakingSupport for elasticsearch v6, removed

    Applies if you use elasticsearch v6.

  • breakingThe jaegermcp extension, merged into jaegerquery

    Applies if you use the jaegermcp extension.

  • breakingExpired stable feature gates, removed

    Applicability is not stated in the release notes.

Plan ahead (1)

  • deprecatedThe legacy flag, deprecated

    Applies if you use legacy flag.

Source ↗
OpenTelemetryv0.155.0ObservabilityJun 23, 2026
CHECK 9PLAN 1OTHER 10View full analysis

A release that removes stabilized feature gates, updates processor metric names, and changes service configuration APIs. It also adds schema and metadata tooling capabilities and fixes generator defects.

Check if affected (9)

  • breakingThe confightp.framedSnappy feature gate, removed

    Applies if you use confightp.framedSnappy.

  • breakingThe configoptional.AddEnabledField feature gate, removed

    Applies if you use configoptional.AddEnabledField.

  • breakingThe confmap.newExpandedValueSanitizer feature gate, removed

    Applies if you use confmap.newExpandedValueSanitizer.

  • + 6 more on the release page

Plan ahead (1)

  • deprecatedService configuration API deprecations

    Applies if you use service.Settings.CollectorConf or extensioncapabilities.ConfigWatcher.

Source ↗
OpenTelemetryv0.152.1ObservabilityMay 19, 2026
CHECK 2PLAN 1OTHER 7View full analysis

A maintenance release that adds exporter in-flight request monitoring and configuration-validation APIs while correcting runtime and configuration behavior. It also changes Prometheus telemetry defaults for explicitly configured metrics and deprecates older validation APIs.

Check if affected (2)

  • breakingThe max_request_body_size limit for snappy requests

    Applies if you configure max_request_body_size.

  • breakingPrometheus exporter defaults for explicitly configured telemetry

    Applies if you configure the telemetry metrics section.

Plan ahead (1)

  • deprecatedThe xconfmap.Validator and confmap.Validate APIs

    Applies if you use xconfmap.Validator or confmap.Validate.

Source ↗
OpenTelemetryv0.152.0ObservabilityMay 11, 2026
PLAN 1OTHER 10View full analysis

OpenTelemetry v0.152.0 adds exporter observability and configuration/API capabilities while correcting bugs in request handling, telemetry, and value formatting. It also deprecates older configuration validation APIs in favor of the confmap APIs.

Plan ahead (1)

  • deprecatedThe xconfmap.Validator and confmap.Validate APIs, deprecated

    Applies if you use xconfmap.Validator or the deprecated confmap.Validate API for configuration validation.

Source ↗
OpenTelemetryv0.151.0ObservabilityApr 28, 2026
CHECK 2PLAN 1OTHER 23View full analysis

A release with API and configuration contract changes, new capabilities, deprecations, and bug fixes. It includes transport, telemetry, generated configuration, and data-handling updates, with no disclosed security advisories or security-specific fixes.

Check if affected (2)

  • breakingRelative replace paths in generated Collector source

    Applies if you use the generated Collector source.

  • breakingNamed Config.Protocols field

    Applies if you use Config.Protocols.

Plan ahead (1)

  • deprecatedDefaultMetricsBuilderConfig deprecation

    Applies if you use DefaultMetricsBuilderConfig.

Source ↗
Cortexv1.21.0ObservabilityApr 27, 2026
ACTION 1CHECK 1PLAN 3OTHER 81View full analysis

A feature and maintenance release that adds Store Gateway, federation, overrides, caching, metric, and query capabilities while graduating several experimental features. It also changes defaults and configuration names, updates dependencies, and fixes correctness, memory, panic, and data-corruption defects.

Action needed (1)

  • breakingThe blocks storage bucket index default

    Blocks storage now enables the bucket index by default through -blocks-storage.bucket-store.bucket-index.enabled. Disabling it with -blocks-storage.bucket-store.bucket-index.enabled=false is not recommended for production.

Check if affected (1)

  • breakingThe Distributor type and unit label flag

    Applies if you configure either -distributor.enable-type-and-unit-labels or -distributor.otlp.enable-type-and-unit-labels for remote write v2 and OTLP requests.

Plan ahead (3)

  • breakingThe Ruler API flag rename

    Applies if you configure -experimental.ruler.enable-api.

  • breakingThe Alertmanager API flag rename

    Applies if you configure -experimental.alertmanager.enable-api.

  • breakingThe Users Scanner user index update configuration

    Applies if you configure either -*.users-scanner.user-index.cleanup-interval or clean_up_interval.

Source ↗
Prometheusv3.11.0ObservabilityApr 2, 2026
CHECK 1PLAN 2OTHER 42View full analysis

A broad release with new service discovery, PromQL, TSDB, and UI capabilities, alongside performance, dependency, output, and correctness changes. It also deprecates legacy Hetzner discovery labels and corrects TSDB retention-time handling.

Check if affected (1)

  • breakingThe storage.tsdb.retention.time unit handling

    Applies if you configure storage.tsdb.retention.time.

Plan ahead (2)

  • deprecatedThe __meta_hetzner_datacenter label, deprecatedremoval date not announced

    Applies if you use __meta_hetzner_datacenter.

  • deprecatedThe Hetzner Cloud datacenter location labels, deprecated

    Applies if you use __meta_hetzner_hcloud_datacenter_location or __meta_hetzner_hcloud_datacenter_location_network_zone.

Source ↗
Chaos Meshv2.8.2ObservabilityMar 25, 2026
ACTION 2CHECK 1PLAN 1OTHER 6View full analysis

A maintenance release deprecates and removes install.sh, updates the Go toolchain and JSON-RPC dependency, and corrects dashboard and webhook issues. It also includes vulnerability fixes in Go and UI packages.

Action needed (2)

  • securityGo package updates for vulnerability fixes

    Go packages are upgraded to fix vulnerabilities.

  • securityUI package updates for vulnerability fixes

    UI packages are upgraded to fix vulnerabilities.

Check if affected (1)

  • breakingThe install.sh installer, removed

    Applies if you use install.sh.

Plan ahead (1)

  • deprecatedThe install.sh installer, deprecated

    Applies if you use install.sh.

Source ↗
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