What's new in MediaAccessibility

MediaAccessibility holds system-wide media accessibility settings, mainly closed-caption and subtitle appearance. Apps read these preferences through the MACaptionAppearance APIs to style captions to a user's configured domain and overrides.

The 27 SDK adds one API and deprecates or removes nothing. The new symbol is MACaptionAppearanceDomain.videoConferencing, a caption-appearance domain case for video conferencing contexts.