If you don't upgrade and pay for Microsoft Teams Premium you could lose your data
It is fair to say that the upcoming changes to Microsoft Teams are more than a little confusing. The impending launch of Microsoft Teams Premium means that various features that have been free so far, will only be available to those willing to pay a monthly or annual fee.
The existing free tier -- which Microsoft is now referring to as Microsoft Teams Free (classic) -- will vanish on April 12, 2023. There is a new free tier launching called, sightly puzzlingly, Microsoft Teams (free), but anyone opting for this will not only have to sign up for a new account, but will also lose access to the data associated with their old, free account.
Microsoft is launching Teams Premium and some features that are currently free will be paywalled
Back in October, Microsoft announced plans to launch Microsoft Teams Premium, a paid-for version of its meeting and collaboration software. Now we know that the Premium tier is due to launch next month, and that as of February some of the features and options that are currently available to everyone for free will only be available to Premium users.
Although a precise launch date has not yet been revealed, Microsoft has told partners that the current schedule has Microsoft Teams Premium launching in "early February 2023". The company has also said that "some Teams features will move from Teams licenses to Teams Premium licenses".