v4.4.0 (17 August 2026)​

New functionalities​

• Add support to map between taxonomy versions.
• add API endpoints for fuzzy search public specifications.
• Issue 1464 Add taxonomy import function from skos rdf
• Issue 1695 Codelists are specifications now
• Issue 1696 Codelists can now be shown on the canvas
• Issue 1704 Allow uploading new codelist versions with xml
• Issue 1724 Add mapping suggestions to sth backend
• Issue 1593 Add license configuration for spec versions

Bugfixes / UX improvements​

• Epic 108 Some fixes to improve WCAG accessibility compliance.
• Issue 1548 Fix re-use of SKOS concepts in taxonomy versions
• Issue 1665 Fix issue where Codelist entries of unioned codelists were not displayed
• Issue 1677 Add and apply styleguide for canvas panes
• Issue 1682 RDF example fails for bottom-up created message model
• Issue 1685 Refresh element edit panes after adding sub-elements in the tree, preventing accidental child deletion on save
• Issue 1686 Remove redundant isMessage from yaml element import to prevent invalid Element model.
• Issue 1687 Bug 500 error when accessing codelists
• Issue 1689 Link to csv download of taxonomy from a concept down is broken
• Issue 1692 Fix DCAT export in case any Requirements spec exist in the environment
• Improve taxonomy CSV export recursion and fix cloned element syntax-binding remapping for child roots
• Fix wrong confirmation dialog texts on 'Add next level descendants?'
• Issue 1700 Fix label assignment failing with "All labels must belong to the same project as the artefact"
• Issue 1701 Fix element label removal not persisting and multiple labels causing duplicate tree entries
• Issue 1709 Fix element path serialization when elements reference a Business rule
• Issue 1719 Remove Artefact->project
• Issue 1729 Date picker not rendering correctly
• Issue 1733 Fix zero and negative lower-bound value restrictions being lost when merging separate OWL restriction nodes
• Issue 1743 Fix 'User' can't view codelist-version screen for external codelist
• Show JSON schema error when loading in wizard
• FIT wizard: include transitive rdfs:subPropertyOf relations when finding outgoing properties for a class URI

Build / deployment / environments related​

• Issue 1727 Initiate new environment: Skills
• Issue 1732 Add new issue template to KS environment
• Issue 1746 Raise bundle size limit to fix pipeline.
• Finalize CI/CD for new environment
• Update a frontpage for environment, PM Issue 454
• Upgrade angular to v20, symfony to 7.4.
• Update AGENTS.md with LLM coding guidelines
• Fail CI when the backend phpunit code coverage decreases significantly compared to the target branch, warn on a tiny decrease
• Raise the PHP memory limit to 512M in the backend-tests CI job, which outgrew the 128M default
• Improve speed of CI pipeline

v4.3.0 (24 April 2026)​

New functionalities​

• Epic 89 Add requirements spec type
• Epic 89 Allow mapping between Message Model and Requirements specs
• Issue 420 Admin page to import YAML files as new message model versions
• Issue 420 Admin page to import business rules from YAML
• Issue 420 YAML element import: support linking business rules by humanId
• Issue 420 Admin page to import codelists from OASIS genericode XML files
• Issue 1533 Add bar that eases navigation between spec/version/actions
• Issue 1569 Add Venetian blind schema style option for OpenAPI specification export
• Issue 1573 Add SSSOM export for message mapping specifications
• Issue 1611 Improve taxonomy search
• Issue 1638 Make SSSOM export accessible by machine-to-machine token, not only through backend and login token
• Issue 1639 Enrich SSSOM export
• Add unstable public project overview API endpoints
• Extend serializer to allow id-less update of univalent entity relations
• Add library to support json-ld serialization of rdf graphs
• Add framework for displaying automated mapping suggestions

Documentation​

• Issue 1467 Expand taxonomy management documentation
• Issue 1469 Expand business rules management documentation
• Issue 1470 Expand codelist management documentation
• Issue 1661 Expand message model management documentation

Bugfixes / UX improvements​

• Issue 1518 Update mapping progress bars to show predicate and status separately
• Issue 1577 Add issue/comment icons to mapping list on canvas
• Issue 1578 Add button to navigate to canvas after creating a mapping version
• Issue 1601 Bugfix editing root elements due to large amount of data
• Issue 1602 Bugfix: allowAdditionalProperties now correctly applied for array elements with no sub-elements in JSON Schema export
• Issue 1604 Bugfix several api urls for non-default language app, including the login option
• Issue 1619 Can't delete uploaded file, can't distinguish two filenames with same display name.
• Issue 1623 Bugfix missing artefact for new entities
• Issue 1625 Concept note field too small
• Issue 1626 Cant create new taxonomy version from tax edit screen
• Issue 1627 Sort Taxonomy versions just like message model versions
• Issue 1633 Fixes JSON Example generator bug
• Issue 1635 Add Dutch translation for My account page
• Issue 1636 Fix toast when generating message model using AI
• Issue 1641 Automatically set author and creation date on all new artefacts
• Issue 1642 Bugfix: predecessor autocomplete on message model version edit caused 404 on page load
• Issue 1643 Various small UX improvements to default spec creation/edit screen
• Issue 1663 Fix codelist entry form "Reported by" dropdown gating to account manager role
• Issue 1667 Removing a JSON Schema spec breaks Wizard for existing derived messages
• Issue 1670 Make mappings source and target clearable.
• Fix performance of copy functionality of large message models
• Add option to manually reset namespace definitions used in message model version
• Allow to edit element xpath in technical details panel of edit element
• Bugfix deleting syntax bindings due to foreign key constraint for example objects
• Show spinner on Save button and highlight when there are unsaved changes
• Bugfix: selected element in message model tree no longer collapses after adding a sub-element
• Refactor and add Dutch translations for mapping status, predicate, and justification labels
• Sort versions + improve version table in specification edit interface
• Bugfix ElementType namespace URI return type causing errors in XML schema export
• Unify page headers. Using h1, h2, etc consistently
• Change house style for NxtGen/SCSN environment

Build / deployment / environments related​

• Issue 1618 Fix logo and Language customization for new environment
• Issue 1678 Add new environment image
• Customize a frontpage (2x)
• Add NxtGen logo to DPP environment
• Put review env to traefik ingress class

v4.2.0 (12 March 2026)​

Bugfixes / UX improvements​

• Issue 1444 Delete organisation results in 500 server error
• Issue 1582 Bugfix schema downnload link
• Issue 1584 Bugfix duplicates in acknowledgements
• Issue 1586 Add v3 legacy oauth login endpoint
• Issue 1587 Bugfix missing subscription type
• Issue 1588 Prevent empty representative label
• Issue 1589 Refactor Representative entity and remove duplicates
• Issue 1597 Bugfix xml validator input for generated schematron
• Issue 1609 Bugfix downloading validator rules
• Issue 1617 Can't upload schema to validate to new syntax binding
• Session token persistence. Users don't need to re-login when container restarts
• Restructure menu items. Add missing items: canvas, projects and subscriptions
• Bugfix frontend path to issue view page. The email notifications link to /issue/{id} and are hereby fixed.
• Minor fixes for venetian blind schema generator

Build / deployment / environments related​

• Issue 1603 Adds new use case customization
• Bugfix in CI job publish-public-image
• Keep APP_SECRET the same across helm updates and horizontal scaling
• Update frontend dependencies

v4.1.0 (9 January 2026)​

New functionalities​

• Epic 92 Implement MVP for AI integration, including usage notes and specification generation
  • Issue 1350
  • Issue 1381
  • Issue 1457
• Issue 1544 Wizard constraint and generated example improvements:
  • Generated example values comply with specified regex pattern
  • Fixed value, allowed values and example values are checked against regex pattern
  • If possible, UUIDv4 is used for elements named 'id' or 'uuid'
  • Allow for shorthand name in base datatype field, like 'string', 'decimal', etc

Bugfixes / UX improvements​

• Issue 1574 Reduce AI spec gen description strictness
• Issue 1559 Bugfix for deleted default prefix 'dc:'
• Issue 1560 Bugfix validator UI showing "no schema file"
• Issue 1561 Add missing business rule show interface
• Issue 1570 Taxonomy: CSV export to more than 3 levels
• Issue pm393 Add new logo to DPP environment, update logo styling for homepage

Build / deployment / environments related​

• Issue 1575 Fix access for publish-helm-chart CI job
• CICD jobs use BuildKit instead of Docker dind
• Switch from npm to pnpm. Add caching
• Add dependency caching for backend checks
• Cleanup, restructuring of CI jobs, images, folders
• Improve STH Dockerfile for improved layer caching, reduced image size and build speed
• Move building STH customizations (for different environments) to separate pipeline stage
• Cleanup and improve monolog config for less deprecation logs and passtru warnings
• Update CI scripts to use GCP WIF for authentication + bugfix
• Use local CI cache for buildkit cache
• Add build metadata to semver tag in footer component
• Bugfix docker compose way of initializing new DB.
• Adds legacy db-dump ompatible configuration for mariadb.

v4.0.0 (20 December 2026)​

Bugfixes / UX improvements​

• Issue 1525 Taxonomy search: add dropdown
• Issue 1543 Assert\NotNull missing for joincolumn nullable false.
• Issue 1546 Message version edit: add button to delete root element.
• Issue 1547 Fix login inconsistencies and related UX
• Issue 1548 Show project on issue index / issue view. Prevent adding labels to issue when project not set.
• Issue 1551 Fix for missing element namespace
• Issue 1552 Taxonomy export to TTL fixed
• Issue 1558 Show highlighting on canvas even if mapping itself is not present. Easier way to add mapped element treeview.
• Issue 1562 Fix link to concept from issue. Fix showing issues on concept.
• Fix browser cache control for index.html

Build / deployment / environments related​

• Issue 1362 Add CircPlastX logo to DPP environment
• Adapt changelog ci job to check placement of changelog items
• Add helper service in docker compose to migrate from v3 to v4
• (website) Add domain to privacy statement
• Improve local dev environment startup

v4.0.0-beta.4 (8 December 2025)​

New functionalities​

• Issue 1325 Add functionality to add a sub element by copying from another element from the same message
• Issue 1516 Message mappings are converted to full specs. This adds spec versions to message mappings, and issues, review comments, status, predicate and justification to element mappings.
• Temporarily don´t show mappings on home and specification index page by default

Bugfixes / UX improvements​

• Issue 1388 Implement/Port the 3 export types for taxonomy versions
• Issue 1433 Fix permissions and UX of discussion post (review comment) list
• Issue 1434 Improve view edit codelist
• Issue 1500 Fix file object autocomplete crash on empty field
• Issue 1501 Add warning when leaving page without saving
• Issue 1505 Fix deleting issue replies
• Issue 1523 Account inherits global roles from orgs for which it's a representative
• Issue 1524 Fix image upload and retrieval
• Issue 1537 Fix increased taxonomy loading time
• Issue 1541 Repair DCAT Export for Message Mapping specs
• Issue 1542 Fix
• Issue 1545 Fix setting element name and label in wizard step 1
• Improve and unify canvas panel heading
• Don´t show unpublished version on spec cards

v4.0.0-beta.3 (27 November 2025)​

Bugfixes / UX improvements​

• Issue 1419 Date format and datetime format.
• Issue 1436 Can't remove issue.
• Issue 1511 Migration script to one time update createdAt fields without explicit time from UTC 00:00:00 to 11:00:00
• Issue 1529 Allow deleting specs
• Issue 1530 Allow deleting message spec version with all its elements
• Issue 1531 MessageModelVersion edit: add button to add root element
• Issue 1532 Fix project edit ordering of specifications

Build / deployment / environments related​

• Issue 347 Migration script to one time strip domain name from account display names
• Issue 1456 Mount php.ini as additional conf instead of overwriting default

v4.0.0-beta.2 (22 November 2025)​

Bugfixes / UX improvements​

• Issue 1437 Who said it missing in View review comments.
• Issue 1439 Button 'Add Meeting' in Group view not working
• Issue 1450 Can't create project
• Issue 1502 Taxonomy specification fixes
• Issue 1504 Descriptions edit should be big textfield.
• Issue 1506 Fix edit of Representatives in Organisation
• Issue 1521 Don't allow to change username
• Bugfix serializer. Allow setting value to null

Build / deployment / environments related​

• Config allow_anonymous_access can be specified as config parameter

v4.0.0-beta.1 (9 November 2025)​

Port backend framework, including but not limited to:​

• Replace Ampersand prototype framework by Symfony framework
• Port constraints and rules - part 1
• Port constraints and rules - part 2
• Port account, access control and related logic
• Issue 520 Port venetian blind option for json schema generator
• Issue 594 Auto remove orphaned LinkObjects
• Issue 1365 Add option to disable anonymous access to public resources
• Issue 1368 Restore notifications handling and templates in symfony backend.
• Issue 1369 STH v4 DCAT export links point to STH v3 routes
• Issue 1375 Creating new group should redirect to edit after creating.
• Issue 1376 Restore JSON schema preprocessor
• Issue 1387 Port message model version copy functionality
• Issue 1429 Port validator artefact downloads
• Issue 1431 'Used by' table missing for edit business rule
• Issue 1454 Port API key access to validator service
• Issue 1454 Refactor API key access
• Port issue with EasyRdf namespace prefixes. See v3 MR 684
• Upgrade to Symfony 7.3

New functionalities​

• Issue 520 Add venetian blind option for json schema generator, including simple types

Bugfixes / UX improvements​

• #1444, #1445, #1451
• Several other improvements, see !693
• Issue 1460 Disable dark mode for PrimeNg components until STH has support for dark mode

Build / deployment / environments related​

• Add temporary oauth login routes to smoothen the transition from v3 to v4 for external integrations
• Restore consistent use of SERVER_HOST_NAME env variable
• Refactor how environment specific Symfony backend configurations are specified and picked up in Helm values and templates
• Merge documentation repo (the website) into main STH repo
• Fix CI release job

v3.8.0 (12 July 2025)​

New functionalities​

• Issue 1286 Add SHACL Validator to STH
• Issue 1328 Add support for additional JSON-Schema files to the JSON Validator

Bugfixes / UX improvements​

• Fix JSON-LD syntax inference for SHACL validator
• Issue 1222 Properly propagate JSON Schema errors if the user provided them
• Issue 1227 Automatically format validation rules when exporting

Build / deployment / environments related​

• Issue 1337 Use ingress custom-headers annotation instead of less secure server-snippet annotation
• Pin cloud-sdk image to have Docker cli available for build jobs
• Add buffer size to fingers crossed log handler to prevent memory leak. This especially holds for long running process of messenger worker

v3.7.0 (8 April 2025)​

New functionalities​

• Epic 56 Add content-based access control, including:
  • Enabled fine-grained access control for custom API routes
  • Fix problem where newly created group can't be accessed
• Issue 1327 Add syntax type RDF to data model for shacl validator. This is preparing for integrating SHACL validator

Bugfixes / UX improvements​

• Issue 1309 Bugfix consistent trimming namespaces for XML generators
• Remove unnecessary secretkeyref from the helm chart
• Fixed a bug where SHACL couldn't be generated with an empty URI; this now creates a blank node

Build / deployment / environments related​

• Fixed a bug where the review environment couldn't be upgraded because of PV multi-attach errors
• Remove debug configuration '-vvv' for worker container in debugMode. This produces way to many logs

v3.6.0 (23 February 2025)​

New functionalities​

• Issue 1274 Pick up STH-specific annotation properties from SHACL property shapes by wizard

Bugfixes / UX improvements​

• Issue 576 Sort 'Organizations' page
• Issue 1205 Group meetings: show issues shorter. Example: #12 (closed)
• Issue 1271 Add "new organization" button
• Add log to indicate that notification service is not enabled
• Refactor + fix + minor improvements to notification service

Build / deployment / environments related​

• Enable notification service for MR review environments
• Increase verbosity of worker (symfony console) when STH is set in debugMode

v3.5.0 (6 February 2025)​

New functionalities​

• Issue 699 Copy an existing message model to a new version
• Issue 1246 Add conceptual model for content-based access control

Bugfixes / UX improvements​

• Issue 1178 Show EasyRdf (parse) error message to user
• Issue 1196 Support lang tag of ^^rdf:HTML literal types
• Issue 1262 Bug in rdf example generator when no target class nor datatype
• Update easyrdf to version 1.16. Fixes valid syntax for:
  • Issue 598 Dot in QNames
  • Issue 1012 Whitespace between literal and lang tag
  • Issue 1131 Boolean literal followed by dot or semicolon
• Refactor image upload functionality + fix for missing mime type for files from storage
• Fix generated frontend
• Fix in OwlAdapter to get definition for target class
• Improve performance of getting possible target elements for element mapping. Related to #1122

Build / deployment / environments related​

• Issue 1194 SCSN env - Add menu item to link to documentation in gitbook
• Also update worker sidecar image in CICD scripts for rollout
• Automatic cleanup finished job of creating admin user after new Helm install
• Customize BDI-DIL environment
• Add explicit isCleanInstall tag for the helm chart
• Remove EVH from the Kustomize CI, added to the Helm pipeline
• Update all PHP dependencies + bump version constraints in composer.json
• CICD changes to be able to run on Gitlab.com managed runners; use STH group runner for dind
• CICD cleanup staging and production deployment jobs after migration to helm for all environments
• Helm chart allow to use mailhost without credentials and without the need for existing secret. Allow to skip TLS.

v3.4.0 (3 December 2024)​

New functionalities​

• Issue 628 Add conceptual model for Notification service
• Issue 688 Allow adding images to issues and other markdown fields
• Issue 1115 Option to specify if additional sub elements are allowed in resulting schema
• Issue 1134 Show 'owl:deprecated' clearly in ontology treeviews
• Issue 1168 Nest subclasses in ontology treeviews
• Issue 1170 Notifications: add async sending via queues
• Issue 1196 Retrieve definition from dcterms subject property in Wizard
• Issue 1216 Graph pattern UX first version

Bugfixes / UX improvements​

• Issue 1135 Add search to 'projects' dropdown in step 1 of wizard
• Issue 1167 Message treeview: optimize loading possible properties.
• Issue 1171 Validator: show clear error if unauthorized
• Issue 1177 Validator page: fix network error from code editor
• Issue 1184 Issue: show attachments
• Issue 1211 Issues: show labels
• Issue 1212 Issue: add "assigned to"
• Issue 1214 Issues: allow filtering by label and assigned to
• Issue 1218 Use the Russion doll style as default when requesting generated XML schema
• Issue 1230 Issues: improve label colors when none or a light one is set
• Issue 1231 Taxonomy treeview: improve search
• Issue 1235 Taxonomy treeview: fix concepts shown on all panes
• Issue 1236 Bugfix: Google cloud storage uniform bucket-level access is supported now
• Issue 1241 Canvas: don't show unpublished message versions in search when you don't have the rights

Build / deployment / environments related​

• Issue 812 Add Content Security Policy header
• Issue 1155 Add merge request (review) deployments to CI/CD pipeline
• Issue 1190 Add Graph Pattern API
• Issue 1195 Add security headers to default values
• Issue 1213 Add jobs that trigger staging/production deployments
• Issue 1254 Changed the way the Flyway container image tag is selected
• In CI/CD jobs, pass $CI_COMMIT_SHORT_SHA as sth image tag variable to triggered helm deployment job
• Fixed a bug where file uploads don't work in MR Review environments
• Publish / release Helm chart when there are changes on push to main branch
• Bump Helm chart version to v1.0.0