We have been iterating on different designs and are starting to test internally. I don’t have a timeframe but will keep you posted.
We are working on a design with more density in mind. Until this design is solidified we are putting this item back to Under Review.
The ability to use multiple Teams accounts at the same time is supported on iOS & Android today. The feature team is continuing to work on support for multiple accounts on desktop and web clients. We’ll keep you posted as we have more details.
In addition to being available on Windows & Mac, we have released iOS 2×4 (mobile) and 3×3 (iPad), along with Large Gallery and Together Mode. You will see these options with the latest version from the app store. We are targeting availability for Android clients (mobile and tablet) this quarter as well.
You can read more about Large gallery view, Together mode, as well as other new meetings experiences here: https://techcommunity.microsoft.com/t5/microsoft-teams-blog/new-meeting-and-calling-experience-in-microsoft-teams/ba-p/1537581