Microsoft Teams support is something we're planning on, unfortunately, we cannot provide an ETA at this time because there is no public Microsoft Teams REST API. We are working with Microsoft Teams to get exposing REST APIs booked so we can light it up in Flow. Thank you!
Any update on the timing? Teams is great, but until I get everyone using it, I need to cross-post to Yammer or send emails to the group to get them engaged. Flow seems ideal for that.
The Microsoft Teams connector is now available - the connector and its associated templates are visible here: https://flow.microsoft.com/en-us/services/shared_teams/microsoft-teams/