The engineering team is continuing to work on adding support for multiple accounts on desktop clients. We will first launch support for 1 work/school account and 1 personal account so users can enjoy Teams for work and personal side-by-side. Windows and MacOS. Support for multiple work accounts is still being worked on and will come at a later date.
You can track status via the roadmap here: https://www.microsoft.com/microsoft-365/roadmap?searchterms=68845.
An error occurred while saving the commentColin commented
It is the multiple work accounts that is really important for me. As a consultant, I have a number of clients that I have accounts for. With Covid working practices, Teams has become a major platform for communication but the one work account limit on the desktop app really hinders this.