http://wccftech.com/star-wars-battlefront-ii-duration/

The Star Wars Battlefront II single-player campaign will take around 5-7 hours to complete, according to EA Motive’s studio producer, David Robillard.

That’s what the producer told Australian website Press Start. “…we thought that around 5-7, maybe 8 hours is probably a good amount of time…we wanted to stay very driven towards the Star Wars fantasy that the players are going to experience and not have it be drawn out”, Robillard told Press Start reporter Damian Filippone.