User blog comment:Relite25/'Redguard' DLC thoughts/@comment-4858067-20130210223445

I doubt they'll make you challenge Ulfric or Tulius to a duel to become Skyrim's leader. There would be problems for those who haven't done the Civil war questline. DLC won't really affect the story of the next of the main games, as they are built from the ground up and typically have no relation to each other aside from references to an event in the previous game.

If the rumors are true, you'd most likely help the Hammerfall resistence group kick the Dominion out of the province. If you have completed the Civil war questline, you'd most likely act as an agent of your respective faction, more or less aiding the resistence in a manner similiar to the CIA did for the Cuban Revolutionaries during the Cold war.