Sounds like the biggest change is they will now no longer be required to give Goodell's salary
http://www.foxsports.com/nfl/story/nfl-ends-tax-exempt-status-here-is-what-that-means-042815
http://www.foxsports.com/nfl/story/nfl-ends-tax-exempt-status-here-is-what-that-means-042815