AVFoundation watchOS 6.0 Beta 4 to Beta 5 API Differences
../Frameworks/AVFAudio.framework/Headers/AVSpeechSynthesis.h
Removed
AVSpeechSynthesizer.synthesizerAudioSession
Added
AVSpeechSynthesizer.usesApplicationAudioSession
AVDepthData.h
Added
AVDepthDataQuality
Added
AVDepthDataAccuracy