Last week: https://www.bleepingcomputer.com/news/microsoft/microsoft-releases-new-faster-teams-app-for-windows-and-mac-pcs/ and https://www.microsoft.com/en-us/microsoft-teams/download-app
Faster is good – TEAMS is a pig. But since the rest of my org is on old TEAMS should I wait to avoid any possible incompatibilities, or can I roll back to piggy TEAMS if needed?