The WSJ describes some of the innovations:
“The idea is that bolstering cell reception and adding wireless will enable fans to re-create the living room in their stadium seats. Fans can receive highlights and replays of the game on the field, or other games across the country. Pete Ward, chief operating officer of the Colts, said this year that the team will unleash a new app for on-demand highlights for fans at the game. "Your smartphone is your replay screen in our stadium," Mr. Ward said.
Under consideration is a plan to make fans in the seats privy to the conversations between referees during reviews of disputed calls. It is a "long way off," said Mr. Grubman, but it represents a desire to welcome in-stadium fans into long-secret huddles on the sideline and in the locker room in the name of helping attendance.”
Photo Credit of 2100 inch HD TVs in Dallas Cowboys stadium