> For the complete documentation index, see [llms.txt](https://documentation.immuta.com/latest/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.immuta.com/latest/releases/preview-levels/features.md).

# Features in Preview

The table below outlines the available features currently in preview for this release and when they were introduced.

| Feature                                                                                                                                                                                                                                                                                                   | Availability    | Introduced               |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------- | ------------------------ |
| Allow [masked columns as input for row-level policies](/latest/governance/author-policies-for-data-access-control/authoring-policies-in-secure/data-policies/reference-guides/data-policies.md#masked-columns-as-input-for-row-level-policies) in the Snowflake and Databricks Unity Catalog integrations | Public preview  | September 2023 (v2023.3) |
| [Amazon S3 integration](/latest/configuration/integrations/amazon-s3.md)                                                                                                                                                                                                                                  | Private preview | January 2024 (v2024.1)   |
| [Atlan external catalog](/latest/configuration/manage-data-metadata/catalogs/reference-guides/pre-configuration.md#atlan)                                                                                                                                                                                 | Private preview | 2026.1                   |
| [Databricks Unity Catalog tag ingestion](/latest/configuration/integrations/databricks/databricks-unity-catalog/unity-catalog-overview.md#tag-ingestion)                                                                                                                                                  | Private preview | 2024.3                   |
| [Bulk create Snowflake data sources](/latest/configuration/integrations/snowflake/reference-guides/snowflake-overview.md#snowflake-bulk-data-source-creation)                                                                                                                                             | Private preview | September 2022 (v2022.3) |
| [Google BigQuery](/latest/configuration/integrations/google-bigquery.md)                                                                                                                                                                                                                                  | Private preview | October 2022 (v2022.3)   |
| [Masking fields within struct columns](/latest/governance/author-policies-for-data-access-control/authoring-policies-in-secure/data-policies/reference-guides/data-policies.md#complex-data-types-masking-fields-within-struct-columns)                                                                   | Public preview  | 2021                     |
| [Microsoft Purview external catalog](/latest/configuration/manage-data-metadata/catalogs/reference-guides/pre-configuration.md#microsoft-purview-catalog)                                                                                                                                                 | Private preview | September 2024 (v2024.3) |
| [Monitors and observations](/latest/governance/detect-your-activity/monitors/detect-monitors-reference-guide.md)                                                                                                                                                                                          | Public preview  | February 2024            |
| [Impersonation](/latest/governance/data-consumers/user-impersonation.md)                                                                                                                                                                                                                                  | Public preview  | November 2021 (v2021.4)  |
| [Orchestrated masking policies](/latest/governance/author-policies-for-data-access-control/authoring-policies-in-secure/data-policies/reference-guides/masking-matrix-functions/orchestrated-masking-policies.md)                                                                                         | Private preview | October 2022 (v2022.4)   |
| [Snowflake lineage tag propagation](/latest/configuration/integrations/snowflake/reference-guides/overview.md)                                                                                                                                                                                            | Private preview | December 2022 (v2022.5)  |
| [Write access policies for Snowflake and Databricks Unity Catalog](/latest/governance/author-policies-for-data-access-control/authoring-policies-in-secure/section-contents/reference-guides/subscription-access-types.md)                                                                                | Private preview | September 2023 (v2024.1) |
| [Write access policies for Starburst (Trino)](/latest/governance/author-policies-for-data-access-control/authoring-policies-in-secure/section-contents/reference-guides/subscription-access-types.md)                                                                                                     | Private preview | February 2024 (v2024.2)  |
| [Write access policies for Amazon S3](/latest/governance/author-policies-for-data-access-control/authoring-policies-in-secure/section-contents/reference-guides/subscription-access-types.md)                                                                                                             | Private preview | April 2024 (v2024.2)     |


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