I'm currently developing a skill for a thermostat-like device that supports 3 modes different from the predefined modes that are available in other capabilities. Browsing through the doc I just found the Mode controller interface (https://forums.developer.amazon.com/articles/193088/new-toggle-mode-and-range-capabilities-are-general.html) and it would suit my use case perfectly. When will it be available for other languages? Most importantly German?
Also - is there a predefined UI planned in the Alexa app that will allow to toggle the mode?