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Release Notes

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Version 25.4.0

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New Features

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Multi-Tenancy UI Support

Users belonging to multiple tenants can now switch between them directly within the Simba Intelligence interface. Previously, tenant switching required API-level token management. See the Multi-Tenancy Guide for configuration details.

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Conversational Playground

The Playground has been upgraded to use the Chat API, enabling full conversational interactions with context retention instead of one-off queries.

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License-Based User Restrictions

Administrators can now apply tiered limitations to users based on license level, including restrictions on connector types, API key limits, and supported LLM providers. See the Administrator Guide for configuration options.

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Light Theme

Added an optional light color theme to align with Logi Symphony’s interface, available alongside the existing dark theme.

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Schema Change Detection (Experimental)

Experimental support for automatically detecting schema changes and breakages in data sources, with intelligent suggestions for fixes while maintaining backwards compatibility.

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Improvements

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LangChain v1 Migration

Upgraded from LangChain to v1, incorporating significant performance improvements and new capabilities.

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Vertex AI / Gemini Support

Improved handling of Gemini model responses, including support for new thinking/reasoning output formats. See LLM Provider Configuration for supported models.

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Elasticsearch TEXT_SEARCH

Implemented specialized text search filtering for Elasticsearch connectors where textSearchEnabled is configured, improving search accuracy for text-heavy data sources.

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Helm Chart Changes

Change TypeComponentDescriptionAction Required
Breaking ChangePostgreSQLRemoved Bitnami PostgreSQL subchart dependency. Replaced with custom PostgreSQL StatefulSet implementation. Note: This is only a breaking change if you were using the built-in PostgreSQL. External PostgreSQL (recommended for production) is unaffected.For upgrades with built-in PostgreSQL: Migrate data to external PostgreSQL before upgrading. The chart will detect existing Bitnami PostgreSQL StatefulSet and block the upgrade. Configure global.simba.intelligence.postgresql.enabled: false and provide external database connection details. See validation error message during upgrade for detailed instructions. For upgrades with external PostgreSQL: No action required. For new installations: Use built-in PostgreSQL (dev/test only) or configure external PostgreSQL (recommended for production).
ChangeRedisRemoved Bitnami Redis subchart dependency. Replaced with custom Redis StatefulSet using official Redis Alpine image.For upgrades: Upgrade happens automatically. An old PersistentVolumeClaim (PVC) from the Bitnami Redis installation may be left behind and can be manually deleted if desired. Benefits: Lighter weight Alpine-based image, simplified configuration, better integration.
Known IssueDiscovery Service (GCP)On Google Cloud Platform, upgrading may fail with error: cannot patch "<release>-discovery-query-engine" with kind Service: spec.clusterIPs[0]: Invalid value: may not change once set. This is due to GCP’s Kubernetes API restriction on modifying spec.clusterIPs after service creation.Workaround: Delete the affected service (kubectl delete service <release-name>-discovery-query-engine -n <namespace>) then retry the Helm upgrade. The service will be immediately recreated with correct configuration. Minimal downtime expected.
See the Helm Chart Reference for full configuration options.

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Security Fixes

  • Fixed an authentication issue with Symphony logins
  • Resolved token cache handling to prevent session conflicts between short-term and long-term tokens