This item remains on the backlog.
This continues to be on our backlog due to prioritization of other work items. We will update when there is more to share.
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 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.
Group Calendar is a priority for the team, and the feature team is continuing work on it. You’ll start to see some incremental improvements. We look forward to sharing more details and timeframes soon.