In the Introducing Atlassian Service Collection the statement is made: "That's why we're excited to announce the general availability of Data Manager, available exclusively to Service Collection Premium and Enterprise Customers."
And..."If you're already using Jira Service Management, you'll get Customer Service Management included in your current subscription when you move to Service Collection."
Nobody is Service Collection Premium or Enterprise yet; that was just rolled out. So, do people who have JSM and Assets today lose the ability to work with Data Manager?