There’s an updated (November 2020) Power Apps Licensing Guide. The main updates are for the renaming of the Common Data Service to Dataverse, and the general availability of Dataverse for Teams.
Microsoft announce that the Common Data Service (where you securely store and manage data that’s used by the Dynamics products, for example) has been rebranded as Microsoft Dataverse.
At the same time, Dataverse for Teams (formerly known as Project Oakdale) is also generally available. This is a subset of Dataverse capabilities included as a built-in data platform for Teams that, along with tools such as the new Power Apps app for Teams, enables customers to build low-code apps, automate processes, and deploy chatbots without leaving Teams.