0.33.0 / 2026-06-12

• [CHANGE] The '--enable-feature=auto-gomaxprocs' option has been removed. This flag had no effect since v0.29 and was deprecated in v0.32. It can be safely removed from any startup scripts. #5090, #5251
• [CHANGE] Add group-key-in-metrics feature flag. #5047
• [CHANGE] Move AlertMarker, GroupMarker to marker package. #5047
• [CHANGE] Remove alertmanager_marked_alerts. #5047
• [CHANGE] Remove the following from types package: MemMarker, AlertState*, AlertStatus. #5047
• [FEATURE] Introduce per aggregation group AlertMarkers and drop Global Alert Marker. #5047
• [FEATURE] ui: Add support for silence annotations. #5017
• [FEATURE] api: Add receiver labels and receiver_matchers filter to /api/v2/receivers, /api/v2/alerts, and /api/v2/alerts/groups. #5152
• [FEATURE] eventrecorder: Add structured event recorder behind --enable-feature=event-recorder, with file, webhook, and kafka outputs. #5072, #5246
• [ENHANCEMENT] Add the use_aws_http_client config option to the sns notifier. #5178
• [ENHANCEMENT] template: Add now function to get current time. #5188
• [ENHANCEMENT] docs: Clarify YAML quoting vs matcher token quoting in UTF-8 matchers section. #5264
• [BUGFIX] jira: Allow disabling the resolve transition when resolve_transition is not set. #4821
• [BUGFIX] jira: Include unresolved issues in wont_fix_resolution JQL to prevent duplicate issue creation. #5185
• [BUGFIX] sns: Support the AWS_CA_BUNDLE env variable for the sns notifier. #5178