This morning he made his surprise appearance on the Xbox One Store the app Discover languages by Rosetta Stone , free app aimed at improving our knowledge of English words (or Spanish, for those who study this language) by immersion in a virtual environment in which you will be able to hold conversations (text only, Kinect is not supported for now) that will allow us to discover new words in the language. To install the app you can just search for "Rosetta" directly on the console or from Smartglass.