Support for Adaptive Cards 1.2
It is needed that Teams support Adaptive Cards 2.0 to be able to use the feature Action.ToggleVisibility, among other features introduced by Adaptive Cards 1.1 & 1.2. Teams currently supports only 1.0 version.
A version 2.0 of Adaptive Cards is also in Preview at this moment. It would be good to have it in the road-map or at least having Microsoft coming with an statement of going to 2.0 version directly after it is GA.
Business case: there are complex dialogs where using Action.ToggleVisibility is totally a must, as the amount of text to be presented to the user is too large for a single Adaptive Card to show.
Admin IPI Apps commented
What is the actual supported Version of Adaptive Cards in Microsoft Teams?
Sid Uppal commented
Support for Adaptive Cards 1.2 is now in Public Developer Preview