--- sourceDocument: zurich Combined Product Files sourceDocumentLink: https://www.servicenow.com/docs/r/zurich/delta-xanadu-zurich Release : - zurich ft:locale : - en-US ft:publication_title : - zurich Combined Product Files ft:clusterId : - delta3zx bundleId : - delta3zx --- # Combined Hermes Messaging Service release notes for upgrades from Xanadu to Zurich # Combined Hermes Messaging Service release notes for upgrades from Xanadu to Zurich {#ariaid-title1} Release version: Zurich Updated October 8, 2026 ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 4 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 Xanadu to Zurich This consolidated release notes page assists ServiceNow customers in preparing for upgrades of Hermes Messaging Service from the Xanadu through to the Zurich release versions. It summarizes key new features, changes, and important information relevant to these releases, enabling customers to understand enhancements and upgrade requirements efficiently. Show full answer Show less ## Key Features Introduced * **Xanadu:** Introduction of the Hermes Usage Dashboard to monitor data usage by application and by topic. * **Yokohama:** Added ability to track topic audit history and view changes made to Hermes topics. Enhanced topic message search with keyword and regular expression filters in the Topic Inspector. Improved diagnostics to monitor Hermes component health over time. * **Zurich:** Continued support for monitoring Hermes data usage via the Usage Dashboard. Added the ability to synchronize topic partition counts across Hermes clusters. ## Changes to Existing Features * **Xanadu:** Enabled monitoring and testing of multiple cluster sets by selecting service groups within Hermes Topic Inspector and Diagnostics modules. * **Zurich:** Adoption of the Coral theme as the default user interface theme for portal, web, and mobile experiences with Next Experience or Core UI enabled. This includes brand-neutral illustrations and a new dark theme option for improved accessibility and user comfort. ## Activation and Requirements Hermes Messaging Service remains a ServiceNow AI Platform feature requiring activation through the ServiceNow Stream Connect Installer plugin (com.glide.hub.streamconnect.installer) or by installing the Log Export Service application across all releases from Xanadu to Zurich. No new additional system requirements, browser requirements, or feature deprecations or removals were introduced in these releases. ## Accessibility Enhancements The Zurich release introduces a dark theme option as part of the Coral theme for web and mobile interfaces. This supports accessibility by reducing eye strain and enhancing readability for users. ## Practical Benefits for ServiceNow Customers * Gain detailed visibility into data usage and topic activity to optimize messaging workflows. * Improve operational monitoring and diagnostics of Hermes Messaging Service components. * Utilize enhanced UI themes that improve user experience and accessibility. * Confidently manage message delivery across multiple clusters with synchronization features. * Streamline upgrade preparation with clear guidance on activation and feature changes. Consolidated page of all release notes for Hermes Messaging Service from Xanadu 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 Xanadu 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 | |-|-| | Xanadu | No updates for this release. | | 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__10} | Release | Release notes | |-|-| | Xanadu | [Monitor Hermes data usage](https://www.servicenow.com/docs/access?context=monitoring-data-usage-hermes&family=xanadu&ft:locale=en-US) : Monitor data usage by application and track data usage by topic using the Hermes Usage Dashboard. | | 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__18} | Release | Release notes | |-|-| | Xanadu | [Monitor topics in multiple cluster sets](https://www.servicenow.com/docs/access?context=view-messages-hermes-topic&family=xanadu&ft:locale=en-US) : View messages from multiple cluster sets by selecting a service group in the Hermes Topic Inspector module. [Test connectivity to multiple cluster sets](https://www.servicenow.com/docs/access?context=run-hermes-messaging-service-diagnostics&family=xanadu&ft:locale=en-US) : Verify that your instance can send messages to and receive messages from multiple cluster sets by selecting a service group in the Hermes Diagnostics module. | | 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__26} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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__34} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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__42} | Release | Release notes | |-|-| | Xanadu | 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=xanadu&ft:locale=en-US). | | 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__50} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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__58} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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__66} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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__74} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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__82} | Release | Release notes | |-|-| | Xanadu | * Publish events from your ServiceNow instance to your Apache Kafka environment and consume high volumes of Apache Kafka events from your external systems with low latency. * Effectively process spikes and bursts in message volume from external systems to minimize performance impacts on your instance. * Manage the health and performance of message delivery using Hermes diagnostic tools. See [Hermes Messaging Service](https://www.servicenow.com/docs/access?context=hermes-messaging-service&family=xanadu&ft:locale=en-US) for more information. | | 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. | [ ]