Microsoft have forecasted a new innovation within their December roadmap with virtual breakout rooms in Teams. They are releasing this new feature in their December CY2020 update meaning with it the organiser of a Teams meeting can create multiple breakout rooms and manage these rooms during the meeting.
A good explanation can be found in this Microsoft video in the link below:
Master virtual breakout rooms in Microsoft Teams meetings – Microsoft Tech Community
Here is the roadmap update page on Microsoft:
Microsoft 365 Roadmap | Microsoft 365