Game Informer is reporting that a playable demo of Final Fantasy XV will be available next year. According to reports, the title is Episode Duscae and will be available as a demo voucher when you buy Final Fantasy Type-0 HD. This demo will take place somewhere at the beginning of the game and will be modified into a demo format.
Final Fantasy Type-0 HD will be available March 17 in the States and the demo will be available on Playstation 4 and Xbox One. It is unclear if the demo will be available at launch at this time.