Pub/Sub API End-of-Life

Salesforce is committed to supporting this API for a minimum of three years from the date of first release, which was June 30, 2022. In order to mature and improve the quality and performance of the API, versions that are more than three years old might cease to be supported.

When an API is to be deprecated, advance notice is given at least one year before support ends. Salesforce will directly notify customers using APIs planned for deprecation.