As I have recently noticed the property name for Alexa.RecordController interface was renamed from "RecordingState" to "recordingState". Also the documentation was moved from https://developer.amazon.com/en-US/docs/alexa/device-apis/alexa-property-schemas.html#RecordingState to https://developer.amazon.com/en-US/docs/alexa/device-apis/alexa-recordcontroller.html#properties
Is the property name case-insensitive? Should such changes be allowed without API version change (it still equals "3")?
What worries me is that such change (which may be a breaking change) was made without any notification.