RBoy
(www.rboyapps.com - Making SmartThings Easy!)
3
To add to what Jimmy said, it’s a new format so the apps needs to be updated. All of the RBoy Apps have been updated to support it. Here’s an example of a popular notifications app that is used with the new Sonos for notifications.
You can even set a custom message or text for the app to announce. It’s support TTS natively.