This feature request is still working its way through the backlog queue.
We are still considering this feature for future releases, and will continue to update the status when it changes.
Right now we rename channels to start with "x-" so we don't lose the data, but it's hacky
We have been iterating on different designs and are starting to test internally. I don’t have a timeframe but will keep you posted.
Would also love to see some UX mock ups, lots of folks on our team mess this up, especially in the web UI
As stated in the last update, the ability to use multiple Teams accounts at the same time is being implemented in stages for Desktop. Faster tenant switching functionality on the Windows client has been rolled out to the public ring fully, and Mac will begin rolling out soon. Work is in progress on cross-tenant notification improvements, and support for multiple accounts on desktop will follow. We’ll keep you posted!
Note: The ability to use multiple Teams accounts at the same time is supported on iOS & Android today.
Alex & the Teams team
Due to prioritization of other work-items this has been moved to the backlog. We will update when it is being actively worked on again.
As Teams are merging and we are learning how to best use this product this feature becomes more and more critical