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 The Information Model is an RDFS/OWL-ontology covering the fundamental concepts of the [International Data Spaces](https://www.internationaldataspaces.org) (IDS), i.e. the types of *digital contents* that are exchanged by *participants* by means of the IDS *infrastructure components*. The ontology and its documentation are published at [https://w3id.org/idsa/core](https://w3id.org/idsa/core). The model development is led by the [Fraunhofer Institutes for Applied Information Technology FIT](https://www.fit.fraunhofer.de/en) and [Intelligent Analysis and Information Systems IAIS](https://www.iais.fraunhofer.de/en) with support by members of the [International Data Spaces Association](https://www.internationaldataspaces.org/) in the context of the *Information Model* sub-working group (SWG4). The group is chaired by [Christoph Lange](https://github.com/clange/) ([Fraunhofer FIT](https://www.fit.fraunhofer.de/)) and [Sebastian Tramp](https://sebastian.tramp.name) ([eccenca GmbH](https://www.eccenca.com)). 
 
 The model development is based on [GitHub](https://github.com/International-Data-Spaces-Association/InformationModel), following a [defined branching model](CONTRIBUTING.md). Contributions and community feedback are maintained via the GitHub [ticketing system](images/Issue_Lifecycle.jpg). The [release process](images/Release_process.jpg) is aligned with the International Data Spaces Association architecture
-working group meetings, i.e. there are roughly 2 releases scheduled per year with intermediary updates to the development branch. The current release version is *3.0.0*, with the latest revision *3.1.0*. The Information Model and associated resources published on GitHub are available under the [Apache License 2.0](https://github.com/International-Data-Spaces-Association/InformationModel/blob/master/LICENSE).
+working group meetings, i.e. there are roughly 2 releases scheduled per year with intermediary updates to the development branch. The current release version is *4.0.0*, with the latest revision *4.0.0*. The Information Model and associated resources published on GitHub are available under the [Apache License 2.0](https://github.com/International-Data-Spaces-Association/InformationModel/blob/master/LICENSE).
 
 ## Authors and contributors
 
@@ -21,6 +21,7 @@ with significant contributions, comments and support by (in alphabetical order):
 - Dr. Sandra Geisler, [Fraunhofer FIT](https://www.fit.fraunhofer.de/en)
 - Dr. Anna Kasprzik, [TIB](https://www.tib.eu/en)
 - Dr. Christoph Lange, [Fraunhofer FIT](https://www.fit.fraunhofer.de/en) (see above)
+- Jörg Langkau, [nicos AG](http://www.nicos-ag.com)
 - Johannes Lipp, [Fraunhofer FIT](https://www.fit.fraunhofer.de/en)
 - Andreas W. Müller, [Schaeffler](https://www.schaeffler.de/content.schaeffler.de/en/)
 - Dr. Michael Theß, [Signal Cruncher GmbH](https://signal-cruncher.com/)