Join Teams work meetings from Microsoft Teams (free) and vice versa

Microsoft Teams (Free) users can currently join Teams for work (or school) meetings only as guests, which requires them to use a browser and results in a sub-optimal experience. The new feature rolling out will allow these users to join Teams for work (or school) meetings in one click, without being redirected to the browser or asked to fill in their name/surname. They will also be able to continue collaborating with the meeting organizer and other participants via meeting chat after the meeting.  The feature will work in the opposite way as well, so Teams for work (or school) will just as easily be able to join meetings hosted by a Teams Free user with one click. This is associated with Roadmap ID: 167326

Teams users can pin their favorite apps

A new feature is rolling out according to the roadmap: Users can pin apps to the Teams left rail.
This feature will be on by default, and will allow users to pin apps to the left rail. It can be controlled through the same policies admins used to set up apps for their users.
The admin added apps will still be there, but the users may now add, and slightly rearrange the the setup. And I think this is a good combination, allowing users to personalize their setup tailored to their needs.
According to the message in the admin portal, this feature should already be rolling out and be completed by the end of February (this week).