Your end-users will soon be able to edit the content and channel distribution of a Microsoft Teams message after it has been posted. This feature does not apply to mobile.
Microsoft will be gradually rolling this out at the end of February 2020 with the completion sometime around March 15, 2020.
When using the Teams desktop app or Teams on the web, your users will see an option to edit a message and change how it has been cross-posted.
Microsoft released a New Feature for SharePoint administrators to be able to set the per-site sharing links default to people with existing access.
They will be gradually rolling this out to Targeted Release customers in late January 2020.
The rollout will be completed by the end of March.
Prior to this change, SharePoint Administrators could choose either "Anyone", "People in my organization", or "Specific People" when setting the default sharing link on a per-site basis.
Microsoft announced that they are retiring classic usage and popularity reports for Classic sites. This includes reports for site collections, sites, document libraries, folders and individual items. These usage reports will not be available after February 29, 2020.
So If you use classic sites and require usage data, you can download historical data for all these popularity reports until February 29, 2020.