According to the "New Teams for Web rollout schedule"[0], Classic Teams will be shut down after March 31st. Furthermore, availability of New Teams on "Firefox and Safari browsers, and Linux" will be available in "Q1 2024".HN Microsofters, do you have any idea whether it is crunch time in the Teams team and this support will be rolled out within the next 4 days?
[0]: https://learn.microsoft.com/en-us/microsoftteams/new-teams-web