here are the full details about what the demo has to offer, from EA Sports:
• Two options will be available for Play Now matchups: A Ravens v. 49ers Super Bowl rematch or a Seahawks v. Packers matchup.
• Skills Trainer, which made its EA debut in NCAA Football 14, will be available to try out and includes four drills to help you adjust to the new game mechanics: Precision Modified Running, Total Control Passing, The Option and Ball Hawk.
• Also included are two videos, one of which showcases some of the new features of the Madden franchise. The other breaks down the new Owner Mode and is hosted by Patriots owner Robert Kraft.