I've put Release dates from https://aka.ms/teamsroadmap with items from the post in one place and added short comments about timelines for those who wants to understand when and what's coming after reading the announcement:
Item scheme: Feature [Feature ID from roadmap] - Release date from roadmap; comments.
*Keep in mind that Release date ≠ Launch/GA, but usually features are coming to TAP after Release shortly (with some exceptions of course)
Meetings
- Dynamic view [Feature ID: 65943] - March CY2021; "Dynamic view is rolling out soon"
- View switcher [???] - ???; "View switcher will be available soon";
- Presenter mode [Feature ID: 66587] - March CY2021; "Presenter mode will be available soon"
- PowerPoint Live in Microsoft Teams [Feature ID: 65947] - March CY2021; "PowerPoint Live in Teams is available now"
- Live reactions in Teams Meetings [Feature ID: 68905] - March CY2021; "Live Reactions in Microsoft Teams meetings is now available"
Webinars
- Attendee registration and email confirmations [Feature ID: 66586] - March CY2021
- 1,000-person interactive webinars with moderation control [Feature ID: 65951] - March CY2021; "Beginning this month"
- 20,000-person view-only broadcasts [Feature ID: 65952] - March CY2021; "This feature is available this month"
- Attendee reporting [Feature ID: 66585] - April CY2021; "will be available next quarter"
- Teams and Microsoft Dynamics 365 event experience [???] - GA
Chat and Collaboration
- Microsoft Teams Connect [???] - ???; "will roll out broadly later this calendar year"
- Teams and Dynamics 365 business process experience [???] -???; "will be rolling out in April"
- Task publishing checklist and editing capabilities [Feature ID: 59719] - January CY2021; "will be available later this month (March CY2021)"
- Approvals app updated with templates, attachment capabilities, and markdown support [???] - April CY2021; "Starting in April..."
- Teams mobile experience enhancements [???] - ???
Security, compliance, and privacy
- End-to-end encryption option for Teams 1:1 VoIP calls [???] - ???; "will be available to commercial customers in preview in the first half of this calendar year, expanding support for online meetings later";
- Teams Multi-Geo support [???] - April CY2021; "will begin rolling out in April"
- Disable attendee video during meetings []Feature ID: 70620 - April CY2021
- Invite only meeting options Feature ID: 68730[] - March CY2021; "will be rolling out later this month"
- Safe Links [Feature ID: 34298] - March CY2021
- Co-author in encrypted docs using Office Apps [???] - GA; "Co-authoring in encrypted docs is supported through the Office apps, Office Web Apps, and Teams and is available now!"
Calling
- Operator Connect [???] - ???; "will enter public preview later this year"
- Operator Connect Conferencing [???] - ???; "will enter private preview next quarter"
- Microsoft Calling Plan expansion [Feature ID: 68773] - November CY2020; "beginning next month and completing by end of June 2021"
- Contact Center and Compliance Recording certified solutions [???] - ???; "This month, we are announcing that ... companies have achieved contact center certification for their solutions"
- Endpoint transfer [Feature ID: 67176] - October CY2020; "Endpoint transfer will be available early next quarter"
- Low data mode [???] - ???; "is now available"
Devices
- New gallery views now available in Microsoft Teams Rooms [Feature ID: 68738] - February CY2021; "available today"
- Intelligent speakers for Microsoft Teams Rooms [NA] - New devices available
- Teams panels [Feature ID: 68735] - March CY2021; "Teams panels are now available"
- New functionality for Teams display [NA] - "This month, we’re announcing several new features for Teams display"
- New peripherals certified for Teams [NA] - New devices available
- Device-as-a-service (DaaS) expansion [NA] - "will be available by the end of March 2021"
Custom development and Power Platform
- Teams interoperability with Azure Communication Services [NA] - "Now in public preview"
- App customization and branding [???] - ???; "feature is now available in the Teams Admin Center"
- Teams automation capabilities [???] - ???; "Later this month (March CY2021)"
- Updates to Dataverse for Teams limits and upgrades [???] - ???; Available today (March CY2021)
Management
- Secure and scale your meeting rooms with ease using Teams Rooms Managed Services [NA] - Just announcement
- Remote device provisioning [Feature ID: 70675] - March CY2021; In development
- Real-time telemetry [???] - ???; "will ship in the first half of the calendar year"
- Anonymous user usage reports [???] - ???; "This capability will be available by the end of March"
- Teams user usage report in Teams client [???] - ???; "will be available by end of March"
- App risk evaluation - "will be rolling out this year"
- Streamline the experience of managing guest users - "This month"
- Policy enhancements in Teams Admin Center [???] - ???; "policies enhancements will be available during March"