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

Microsoft Teams Group chat size changes

Group chat in Teams is one of many ways to communicate with your peers. Teams is increasing the size limitation of this feature to 250 participants.
There is still a limitation on when certain features become unavailable. Some of the features with limitations are:
  • Calling (audio and Video) - Max 20 participants: Use meetings for larger groups
  • File sharing - Max 10 participants: Use OneDrive, Sharepoint or Channels in Teams for larger groups.
According to the roadmap item 63577, this should be rolling out in May. It is not possible to change any of these settings.