Competes with both the Wii U and Airplay, offering some interesting functionality as well. From Bryan Bishop on the Verge:
Game of Thrones was demonstrated as an example, with the Smart Glass app displaying an interactive map of Westeros, pinpointing where the action in a given scene was taking place. Developers will also be able to use it in association with games; a Madden title was shown as one example, with users able to draw hot routes on a Windows 8 tablet’s touchscreen, with a Halo 4 concept allowing players to view their stats, get notified of different waypoints, and initiate multiplayer gaming sessions from the app.