What’s new at Bosch Semantic Stack?

With recent releases, we have enabled new features incrementally.
The corresponding software versions are listed in the release notes.

Here, find a summary of the completed features and further results from the last few releases.

2025.R2 release communication

With recent releases, we have enabled new features incrementally and announced new software versions in the release notes.

This release communication summarizes the latest few releases, highlighting what is now — as of October 2025 — available for Bosch Semantic Stack.

2025.R2 at a glance

Included versions:

4.51.0, 4.52.0, 4.53.0, 4.54.0, 4.55.0, 4.56.0, 4.57.0, 4.58.0, 4.59.0

Digital Twin Registry (DTR):

Aspect Model Catalog (AMC):

2025.R2 (DTR)

Digital Twin Registry

Includes: DTR-7.16.4, DTR-7.16.5, DTR-7.16.7, DTR-7.16.8, DTR-7.16.9, DTR-7.16.10, DTR-7.16.11, DTR-7.16.12

Asset Administration Shell API 3.1 adoptions

The adoption of the new API version required the following updates:

  • Paging metadata is not optional anymore, but required.

  • The API description was changed.

  • The idShort pattern for write operations was updated.

Learn more: Asset Administration Shell API V3.1.0externallink 20

Patch operation for Asset Administration Shells

The Asset Administration Shell Digital Twin Registry has implemented a custom PATCH REST endpoint for Asset Administration Shells that enables partial updates to existing Shells according to the RFC 7396 JSON Merge Patchexternallink 20 standard.

Learn more: Update Asset Administration Shells via PATCH REST endpoint

Fine-grained access control for Shell groups and Shell labels

You can now restrict the access to Shell groups and labels based on the newly implemented fine-grained access control rules.

Learn more: Restrict access to Asset Administration Shells

2025.R2 (AMC)

Aspect Model Catalog

Includes: AMC-2.7.32, AMC-2.7.33, AMC-2.7.35, AMC-2.7.36, AMC-2.7.37, AMC-2.7.38, AMC-2.7.39, AMC-2.7.40

You can now search for specific elements of Aspect Models via the Element search. You can also use the filter function and search for types of Aspect Model element, which makes the search and implementation of elements into Aspect Models much faster and easier.

License information for Aspect Models

You can now check out Aspect Models' license information when you open them in Aspect Model view and click the License button. This feature enables you to look up license information and figure out which Aspect Models you can use or build up other ones, based on them.

New adjustable parameters for OpenAPI generation

You can now adjust the following new parameters in the OpenAPI specification generation dialog:

  • Resource path – this feature enables you to seamlessly integrate your desired resource path in JSON format and conveniently input the properties needed for advanced configuration.

  • Activate Template – this feature enables you to customize your generated OpenAPI specification through a template in JSON format that contains templated Paths Object paths._ DEFAULT_QUERIES_TEMPLATE _.

  • Generate Comment For See attributes – this feature enables you to generate a $comment OpenAPI element for existing samm:see attributes in your Aspect Model.

Learn more: Aspect Model Catalog API documentation

2025.R1 release communication

With recent releases, we have enabled new features incrementally and announced new software versions in the release notes.

This release communication summarizes the latest few releases, highlighting what is now — as of May 2025 — available for Bosch Semantic Stack.

2025.R1 at a glance

Included versions:

4.42.0, 4.43.0, 4.44.0, 4.45.0, 4.46.0, 4.47.0, 4.48.0, 4.49.0, 4.50.0

Digital Twin Registry (DTR):

Aspect Model Catalog (AMC):

2025.R1 (DTR)

Digital Twin Registry

Includes: DTR-7.15.4, DTR-7.15.6, DTR-7.15.7, DTR-7.15.8, DTR-7.15.9, DTR-7.16.0, DTR-7.16.1, DTR-7.16.2

Storage of license information for newly uploaded TTL files

You can now look up this information at the top of each file.

You can now filter for BPNs and get only the Asset Administration Shell associated with them. This requires an additional access role.

Asynchrous API for event-driven data exchange

You can now use the new Asynchrous API to create Twins more efficiently, providing seamless integration and enabling you to do so without waiting for immediate responses.

Read more: Async API descriptionsexternallink 20

API reference documentation improvement

It is now easier to find the API description that you are looking for as we have refactored our API reference docs URLs. See our API docs for the Digital Twin Registry.

Also, we have introduced an additional entry pageexternallink 20.

New parameter to find recently created Asset Administration Shells

To query the Asset Administration Shell Registry API for Shells that were created after a specific date (timestamp), use the new createdAfter parameter.

Read more: Asset Administration Shell Registry APIexternallink 20

URL placeholders in Submodel Descriptor Templates for specficAssetIds.

The variable data in a template is defined in the href of its endpoints, in the form of placeholders. Endpoint placeholders can leverage runtime data coming from the Asset Administration Shell. This option is now available for specficAssetIds.

Read more: URL placeholders and syntax

2025.R1 (AMC)

Aspect Model Catalog

Includes: AMC-2.7.22, AMC-2.7.24, AMC-2.7.25, AMC-2.7.26, AMC-2.7.27, AMC-2.7.28, AMC-2.7.29, AMC-2.7.30, AMC-2.7.31

Consume Aspect Models directly from the Aspect Model Catalog

Text/Turtle format is now supported as response to the getAspectModel API requestexternallink 20. You can use that in tools like ESMF Java SDK.