School Data Sync (Plan 1) service plan what is it?

Following up from my earlier post, Microsoft support says they did this on purpose - it's here to stay.  School Data Sync (Plan 1) is included in the Office 365 Education licensing SKUs as of today.  (Thanks for the heads up, Microsoft!!)

There is little documentation from an admin perspective on this, and I personally have lots of questions.  But, I'll include some reference links that I've read so far:

https://blogs.office.com/2016/08/18/back-to-school-with-microsoft-classroom-and-school-data-sync/

https://blogs.office.com/2017/01/23/announcing-school-data-sync-general-availability/

https://support.office.com/en-us/article/Get-started-with-Microsoft-Classroom-dd5d064f-6c22-41e0-b721-9d359857d037

https://support.office.com/en-us/article/Overview-of-School-Data-Sync-f3d1147b-4ade-4905-8518-508e729f2e91?ui=en-US&rs=en-US&ad=US

https://support.microsoft.com/en-us/help/4022583/microsoft-classroom-preview-features-are-moving-to-microsoft-teams

Further questions I now have:

• Is the Classroom feature they just deployed the OLD, soon-to-be-deprecated verson of Classroom or the new Teams integrated Classroom?
• If this is the new Teams integrated Classroom, why the heck is it not dependant on the tenant level Teams setting which disables Teams?