> For the complete documentation index, see [llms.txt](https://docs.valtimo.nl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.valtimo.nl/valtimo-docs-v3/release-notes/13.x.x/13.13.0.md).

# 13.13.0

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**Release date 28-01-2026**
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## Migration

* [Front-end migration](/valtimo-docs-v3/release-notes/13.x.x/13.13.0/front-end-migration.md)

## New Features

* **Building blocks for reusable process steps**

  Building blocks let you package a reusable subprocess with its own data model and version it separately from cases. The same building block can be reused across multiple case definitions to keep shared steps consistent, while cases stay stable because they only exchange defined inputs and outputs with the building block. Building blocks can also be moved between environments by importing and exporting their definitions.

  Learn more in [Building blocks](/valtimo-docs-v3/features/building-blocks.md).
* **IKO**

  IKO is a component designed to support service delivery by providing an integrated, up-to-date overview of customer ( Klantbeeld) and object (Objectbeeld) data. It acts as an API gateway that aggregates information from multiple backend sources into a single unified response, enabling employees to assist citizens, businesses, and institutions more effectively and transparently.

  Learn more at Learn more at [IKO documentation](https://docs.integraal-klant-objectbeeld.nl/).

## Enhancements

* **Widget configuration made available to custom component**

  To be able to access the widget configuration in a custom component it is now injected as `widgetConfiguration` when the custom component is created by the `custom-component` widget.
* **Zaken API - Changed required fields for Create Zaakrol plugin actions**

  Changed required fields for; Create Zaakrol - Employee, Create Zaakrol - Organisational unit and Create Zaakrol - Branch
* **Allow switching between process link steps**

  For existing process links, it is now possible to switch between the steps of its configuration in the process link modal.

## Bugfixes

* **Tasks are now no longer closed when another user changes the task assignee.**
* **LockProvider configuration now supports specifying the `timezone` via configuration properties and defaults to `UTC` if not specified.**