From Microsoft Corporation
MC224713, Stay Informed, Published date: Oct 20, 2020New feature, User impact
As announced at Ignite, we are increasing the number of members that can be added to a team from 10,000 to 25,000.
This message is associated with Microsoft 365 Roadmap ID 68723.
When this will happen
We expect rollout to begin in early December 2020 and be complete in late January 2021.How this will affect your organization
Once the feature is available, all new and existing teams will be able to grow and host up to 25,000 members.What you need to do to prepare
You might want to notify your users about this new capability.