We guessed it would happen anyways but here is the official word from Marvel!
Taken from superherohype.com:
It seemed to be a foregone conclusion, but now Marvel Entertainment has made it official. Dominic Cooper, who played the role of Tony’s father Howard Stark in Captain America: The First Avenger, as well as the Marvel One-Shot “Agent Carter,” will reprise his role in the upcoming “Agent Carter” TV series. No further details were given about his involvement but check back here for more info as we learn it.
It’s 1946, and peace has dealt Peggy Carter a serious blow as she finds herself marginalized when the men return home from fighting abroad. Working for the covert SSR (Strategic Scientific Reserve), Peggy must balance doing administrative work and going on secret missions for Howard Stark all while trying to navigate life as a single woman in America, in the wake of losing the love of her life–Steve Rogers.