The Matter Specifications

The Matter Specification is updated twice a year in Spring and Fall.

• Version 1.0 was published in November 2022
• Version 1.1 was published in April 2023
• Version 1.2 was published in October 2023
• Version 1.3 was published in May 2024
• Version 1.4 was published in November 2024

The specification is made up of a number of documents:

• The Core Specification defines the components and how they interact along with a number of common procedures.
• The Application Cluster Specification details the data models used by each cluster that makes up an endpoint.
• The Device Library Specification sets out the types of End User device in Matter and which Application Clusters make up that device.
• The Namespace Specification (introduced in 1.2) details common data formats and structures used across multiple clusters.

All these documents can be downloaded from The Alliance website.