Check out the discussions forum for details, but the two highlights are: Team Color Selection and the Always Control Ball Carrier game option.
Team Color Selection: Choose from 4 different unlocked color palettes (for now) for each team by clicking on either "HOME TEAM" or "AWAY TEAM" on the team selection screen. Add some personalitity to your team and some more color to your screen shots!
Always Control Ball Carrier: On the team selection screen, click the OPTIONS button, then click CPU. You can enable Control Ball Carrier there. When this is enabled, one of the human players on each team will automatically control any CPU player that picks up the ball. It's an "auto switch" feature ideal for single human teams. The player icon now flies from one player to the next to better communicate player switching.