--- sourceDocument: zurich Combined Product Files sourceDocumentLink: https://www.servicenow.com/docs/r/zurich/delta-yokohama-zurich Release : - zurich ft:locale : - en-US ft:publication_title : - zurich Combined Product Files ft:clusterId : - delta3zy bundleId : - delta3zy --- # Combined Hermes Messaging Service release notes for upgrades from Yokohama to Zurich # Combined Hermes Messaging Service release notes for upgrades from Yokohama to Zurich {#ariaid-title1} Release version: Zurich Updated October 8, 2026 ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 3 minutes to read Summarize ![AI sparkle icon](https://servicenow.com/docs/portal-asset/ai-sparkle-icon) Summarized using AI This content was generated using new OpenAI-powered functionality. Results are provided on an as is basis and are not guaranteed to be accurate or complete. ## Summary of Combined Hermes Messaging Service Release Notes for Upgrades from Yokohama to Zurich This consolidated release notes page provides ServiceNow customers with all essential information for upgrading the Hermes Messaging Service from the Yokohama release family to the Zurich release family. It includes new features, changes, activation details, and accessibility considerations relevant to the upgrade process. Show full answer Show less ## New Features * **Yokohama:** * Topic audit history: Track changes made to Hermes topics by viewing audit information. * Message search: Filter messages within a topic using keywords or regular expressions via the topic inspector. * Improved diagnostics: Monitor the health of Hermes components over time. * **Zurich:** * Hermes Usage Dashboard: Monitor data usage by application and track usage by topic. * Partition synchronization: Verify that the topic partition count is synchronized across Hermes clusters. ## Changes * **Zurich:** Introduction of the Coral theme as the default for new portal, web, and mobile experiences when using Next Experience or Core UI. This theme offers a fresh, brand-neutral look and includes a dark theme option for web and mobile to enhance user experience and accessibility. * **Yokohama:** No changes. ## Removed and Deprecated Features No features or functionality were removed or deprecated in either Yokohama or Zurich releases. ## Activation Information Hermes Messaging Service activation remains consistent across Yokohama and Zurich releases. It is a ServiceNow AI Platform feature that requires activation of the ServiceNow Stream Connect Installer plugin (com.glide.hub.streamconnect.installer) or installation of the Log Export Service application. ## Additional Requirements and Browser Support No new additional requirements or browser changes were introduced in these releases. ## Accessibility Information The Zurich release introduces a dark theme option within the Coral theme for web and mobile experiences, supporting improved readability and reduced eye strain for end users. ## Key Outcomes * Improved capability to audit and search Hermes topic messages for better operational insight. * Enhanced monitoring and diagnostics with data usage tracking and partition synchronization to maintain cluster health. * A modernized user interface with the Coral theme and optional dark mode to improve user experience across devices. * Consistent activation process ensuring smooth upgrade and service enablement. Consolidated page of all release notes for Hermes Messaging Service from Yokohama to Zurich. ## How to use this page To help you prepare for your upgrade, we have combined the cross-family Hermes Messaging Service release notes onto one page. Read this summary of the new features, changes, and updated information for your product from Yokohama to Zurich. Tip: If there were no updates for a release notes section in a certain family release, we included a short note for your reference. For example, if a product did not have any updates in Tokyo, the row says "No updates for this release." ## Important information for upgrading Hermes Messaging Service to Zurich Before you upgrade to Zurich, review these pre- and post-upgrade tasks and complete the tasks as needed. {#dfrn3-hermesmessagingservice-summary__entry__2} | Release | Release notes | |-|-| | Yokohama | No updates for this release. | | Zurich | No updates for this release. | [ ] ## New features Between your current release family and Zurich, new features were introduced for Hermes Messaging Service. {#dfrn3-hermesmessagingservice-summary__entry__8} | Release | Release notes | |-|-| | Yokohama | [Topic audit history](https://www.servicenow.com/docs/access?context=view-messages-hermes-topic&family=yokohama&ft:locale=en-US) : Track changes made to a Hermes topic by viewing the topic's audit information. [Search for messages in a topic](https://www.servicenow.com/docs/access?context=view-messages-hermes-topic&family=yokohama&ft:locale=en-US) : Filter messages in a topic using keywords or regular expressions in the Hermes Messaging Service topic inspector. [Improved diagnostics](https://www.servicenow.com/docs/access?context=run-hermes-messaging-service-diagnostics&family=yokohama&ft:locale=en-US) : Monitor the health of Hermes components over time. | | Zurich | [Monitor Hermes data usage](https://www.servicenow.com/docs/access?context=monitoring-data-usage-hermes&family=zurich&ft:locale=en-US) : Monitor data usage by application and track data usage by topic using the Hermes Usage Dashboard. [Synchronize topic partition count](https://www.servicenow.com/docs/access?context=update-topic-hermes&family=zurich&ft:locale=en-US) : Verify that the partition count is synchronized between topics in Hermes clusters. | [ ] ## Changes Between your current release family and Zurich, some changes were made to existing Hermes Messaging Service features. {#dfrn3-hermesmessagingservice-summary__entry__14} | Release | Release notes | |-|-| | Yokohama | No updates for this release. | | Zurich | Coral theme : Coral is now the default theme for new portal, web, and mobile experiences with Next Experience or Core UI enabled. This theme provides a fresh look and feel, featuring brand-neutral illustrations to enhance your user experience. A dark theme option is available for web and mobile experiences. | [ ] ## Removed Between your current release family and Zurich, some Hermes Messaging Service features or functionality were removed. {#dfrn3-hermesmessagingservice-summary__entry__20} | Release | Release notes | |-|-| | Yokohama | No updates for this release. | | Zurich | No updates for this release. | [ ] ## Deprecations Between your current release family and Zurich, some Hermes Messaging Service features or functionality were deprecated. {#dfrn3-hermesmessagingservice-summary__entry__26} | Release | Release notes | |-|-| | Yokohama | No updates for this release. | | Zurich | No updates for this release. | [ ] ## Activation information Review information on how to activate Hermes Messaging Service. {#dfrn3-hermesmessagingservice-summary__entry__32} | Release | Release notes | |-|-| | Yokohama | Activation information : Hermes Messaging Service is a ServiceNow AI Platform feature that is available with activation of the ServiceNow Stream Connect Installer (com.glide.hub.stream_connect.installer) plugin or installation of the Log Export Service application. For details, see [Hermes Messaging Service activation](https://www.servicenow.com/docs/access?context=hermes-messaging-service-activation&family=yokohama&ft:locale=en-US). | | Zurich | Activation information : Hermes Messaging Service is a ServiceNow AI Platform feature that is available with activation of the ServiceNow Stream Connect Installer (com.glide.hub.stream_connect.installer) plugin or installation of the Log Export Service application. For details, see [Activating Hermes](https://www.servicenow.com/docs/access?context=hermes-messaging-service-activation&family=zurich&ft:locale=en-US). | [ ] ## Additional requirements If any additional requirements were introduced or changed for Hermes Messaging Service we have noted them here. {#dfrn3-hermesmessagingservice-summary__entry__38} | Release | Release notes | |-|-| | Yokohama | No updates for this release. | | Zurich | No updates for this release. | [ ] ## Browser requirements If any specific browser requirements were introduced or changed for Hermes Messaging Service we have noted them here. {#dfrn3-hermesmessagingservice-summary__entry__44} | Release | Release notes | |-|-| | Yokohama | No updates for this release. | | Zurich | No updates for this release. | [ ] ## Accessibility information Review details on accessibility information for Hermes Messaging Service, such as specific requirements or compliance levels. {#dfrn3-hermesmessagingservice-summary__entry__50} | Release | Release notes | |-|-| | Yokohama | No updates for this release. | | Zurich | Accessibility information : Dark theme : The new Coral theme includes a dark theme option for web and mobile experiences. This option is commonly used to alleviate eye strain and improve readability. | [ ] ## Localization information If there are specific localization considerations for Hermes Messaging Service we have noted them here. {#dfrn3-hermesmessagingservice-summary__entry__56} | Release | Release notes | |-|-| | Yokohama | No updates for this release. | | Zurich | No updates for this release. | [ ] ## Highlight information If there are specific highlight considerations for Hermes Messaging Service we have noted them here. {#dfrn3-hermesmessagingservice-summary__entry__62} | Release | Release notes | |-|-| | Yokohama | * View the audit history for all topic operations. * Scan and inspect topic messages using keywords or regular expressions. * Monitor the health of Hermes components over time. See [Hermes Messaging Service](https://www.servicenow.com/docs/access?context=hermes-messaging-service&family=yokohama&ft:locale=en-US) for more information. | | Zurich | * Monitor Hermes data usage over time. * Verify that topics are synchronized between Hermes clusters. See [Hermes Messaging Service](https://www.servicenow.com/docs/access?context=hermes-messaging-service&family=zurich&ft:locale=en-US) for more information. | [ ]