Please note that the three components, variant configuration, pricing service, and application for data replication and administration, are selected when opening that link.
Use the Subscribe functionality there to get notified about changes:
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When you receive an email with subject 'SAP Help Portal: Updates in Your Subscribed Pages' with the latest changes on What's New, it is important to log on to help portal when clicking on the link in that email, to have the filters of the three chosen components applied. Otherwise, you will also see changes to all other BTP applications.