Now Dutch, (Indian) English, Russian, lish are now officially supported in version 3.1 of Text-To-Speech. ile there’s no use case for the app in its stalone form, it’s a powerful application that other apps can take advantage of. The ‘read aloud’ option in ay Books the ‘conversation’ feature in Translate is possible from the TTS application, so you may have been using it but never knew.  If you’d like to tweak the text-to-speech output to another language, for whatever reason, it can be changed in Settings>nguage Input>Text-to-speech output.