yes it does, but it sounds like siri. you just gotta press 'v' i think. if not its in the menu under 'help' ^
it does. renpy has native support for it.
renpy uses the native system apis to dictate text for you so it sounds like whatever speech engine the system has by default, which makes it usually sound like siri on mac and cortana on windows
and obviously it wont work on systems that dont have such apis *ahem* linux and freebsd