Alerting: Sanitize invalid label/annotation names for external alertmanagers. #54537, @JacobsonMT

Alerting: Telegram: Truncate long messages to avoid send error. #54339, @ZloyDyadka

DisplayProcessor: Handle reverse-ordered data when auto-showing millis. #54923, @leeoniya

Heatmap: Add option to reverse color scheme. #54365, @leeoniya

PluginLoader: Alias slate-react as @grafana/slate-react. #55027, @kaydelaney

Search: Add substring matcher, to bring back the old dashboard search behavior. #54813, @ArturWierzbicki

Traces: More visible span colors. #54513, @joey-grafana

Alerting: Fix incorrect propagation of org ID and other fields in rule provisioning endpoints. #54603, @alexweav

Alerting: Resetting the notification policy tree to the default policy will also restore default contact points. #54608, @alexweav

AzureMonitor: Fix custom namespaces. #54937, @asimpson

AzureMonitor: Fix issue where custom metric namespaces are not included in the metric namespace list. #54826, @andresmgot

CloudWatch: Fix display name of metric and namespace. #54860, @sunker

Cloudwatch: Fix annotation query serialization issue. #54884, @sunker

Dashboard: Fix issue where unsaved changes warning would appear even after save, and not being able to change library panels. #54706, @torkelo

Dashboard: Hide overflow content for single left pane. #54882, @lpskdl

Loki: Fix a bug where adding adhoc filters was not possible. #54920, @svennergr

Reports: Fix handling expired state. (Enterprise)