• [CHANGE] Templating errors in the SNS integration now return an error. #3531 #3879
• [FEATURE] Add a new Microsoft Teams integration based on Flows #4024
• [FEATURE] Add a new Rocket.Chat integration #3600
• [FEATURE] Add a new Jira integration #3590 #3931
• [FEATURE] Add support for GOMEMLIMIT, enable it via the feature flag --enable-feature=auto-gomemlimit. #3895
• [FEATURE] Add support for GOMAXPROCS, enable it via the feature flag --enable-feature=auto-gomaxprocs. #3837
• [FEATURE] Add support for limits of silences including the maximum number of active and pending silences, and the maximum size per silence (in bytes). You can use the flags --silences.max-silences and --silences.max-silence-size-bytes to set them accordingly #3852 #3862 #3866 #3885 #3886 #3877
• [FEATURE] Muted alerts now show whether they are suppressed or not in both the /api/v2/alerts endpoint and the Alertmanager UI. #3793 #3797 #3792
• [ENHANCEMENT] Add support for content, username and avatar_url in the Discord integration. content and username also support templating. #4007
• [ENHANCEMENT] Only invalidate the silences cache if a new silence is created or an existing silence replaced - should improve latency on both GET api/v2/alerts and POST api/v2/alerts API endpoint. #3961
• [ENHANCEMENT] Add image source label to Dockerfile. To get changelogs shown when using Renovate #4062
• [ENHANCEMENT] Build using go 1.23 #4071
• [ENHANCEMENT] Support setting a global SMTP TLS configuration. #3732
• [ENHANCEMENT] The setting room_id in the WebEx integration can now be templated to allow for dynamic room IDs. #3801
• [ENHANCEMENT] Enable setting message_thread_id for the Telegram integration. #3638
• [ENHANCEMENT] Support the since and humanizeDuration functions to templates. This means users can now format time to more human-readable text. #3863
• [ENHANCEMENT] Support the date and tz functions to templates. This means users can now format time in a specified format and also change the timezone to their specific locale. #3812
• [ENHANCEMENT] Latency metrics now support native histograms. #3737
• [BUGFIX] Fix the SMTP integration not correctly closing an SMTP submission, which may lead to unsuccessful dispatches being marked as successful. #4006
• [BUGFIX] The ParseMode option is now set explicitly in the Telegram integration. If we don't HTML tags had not been parsed by default. #4027
• [BUGFIX] Fix a memory leak that was caused by updates silences continuously. #3930
• [BUGFIX] Fix hiding secret URLs when the URL is incorrect. #3887
• [BUGFIX] Fix a race condition in the alerts - it was more of a hypothetical race condition that could have occurred in the alert reception pipeline. #3648
• [BUGFIX] Fix a race condition in the alert delivery pipeline that would cause a firing alert that was delivered earlier to be deleted from the aggregation group when instead it should have been delivered again. #3826
• [BUGFIX] Fix version in APIv1 deprecation notice. #3815
• [BUGFIX] Fix crash errors when using url_file in the Webhook integration. #3800
• [BUGFIX] fix Route.ID() returns conflicting IDs. #3803
• [BUGFIX] Fix deadlock on the alerts memory store. #3715
• [BUGFIX] Fix amtool template render when using the default values. #3725
• [BUGFIX] Fix webhook_url_file for both the Discord and Microsoft Teams integrations. #3728 #3745