Apparently it was disclosed well enough for it to not come as a surprise to people, including German politicians (https://www.spiegel.de/netzwelt/web/volkswagen

Apparently it was disclosed well enough for it to not come as a surprise to people, including German politicians (https://www.spiegel.de/netzwelt/web/volkswagen-konzern-datenleck-wir-wissen-wo-dein-auto-steht-a-e12d33d0-97bc-493c-96d1-aa5892861027 https://www.spiegel.de/netzwelt/web/volkswagen-konzern-daten...) But fair, it's probably disclosed somewhere in a 80 page EULA for the app.