This is still being worked upon. I hope to have more details in the next couple months.
Please know the team is actively working on this feature.
The feature team is still reviewing, there is lots of discussion about this item and I hope to have a decision soon.
Performance has been and continues to be a big focus area for Teams. One main area we have made improvements in is responsiveness for the most frequent user actions of switching between Chat, Channel, and Activity. We are also focused on reducing resource consumption and application load time. More improvements are on the way.
Thanks to everyone who volunteered for testing the Office 365 group calendar. The TAP team will be reaching out as we are closer to being ready.
I am interested in testing this as well
Good news, this feature has moved into the planning stages. I’ll keep you posted as we continue to move ahead in development.