We know you are patiently waiting for this feature. This feature is being implemented in stages. Fast tenant switching is currently in testing both internally and with early customers. We expect to release to the public in the Fall. I’ll post an update once it’s rolling out.
Full multi-tenant, multi-user support will be added after fast tenant switching.
I vote for this too! I'm a consultant and have two clients on Teams and need to chat with them both daily. Please move this to HIGH Priority in your feature list!!