From Microsoft Corporation
MC207957, Stay Informed, Published date: Mar 27, 2020
Major update: AnnouncementApplies To: AllUpdated May 22, 2020: We are pleased to announce that this feature is now available to all tenants. Additionally, please see the Additional Information for best practices on managing large teams.
We will soon be increasing Microsoft Teams team membership limit to 10 thousand members.
We will begin enabling this for all tenants at the end of April and will be complete at the end of May.
This message is associated with Microsoft 365 Roadmap ID 62549How does this affect me?
Once available, all new and existing teams can host up to 10 thousand members. Increase in team size will help you utilize teams for scenarios such as company wide, department wide and inter-departmental communications.What do I need to do to prepare for this change?
No explicit action is needed from admins and both new and existing teams will be able to grow to 10,000 members.Additional information