Release notes are here: https://docs.microsoft.com/en-us/microsoftteams/teams-powershell-release-notes

Few interesting new cmdlets:

• [Get|Remove]-SharedWithTeam location of a shared channel in a team
• Get-TeamAllChannel get all channels belonging to a team in a single command
• Get-TeamIncomingChannel i believe it retrieves the info about shared channels
• Get-AssociatedTeam gets information about all the teams that user belongs to
• Get-SharedWithTeamUser retrieves information about the shared channel members

If you have the module hit Update-Module MicrosoftTeams to update it
Otherwise hit Install-Module -Name MicrosoftTeams -Force -AllowClobber