http://www.pcgamer.com/star-wars-battlefront-2-campaign-is-5-7-hours-long/

Electronic Arts is putting a good chunk of effort into promoting the campaign side of Star Wars Battlefront 2. The tale of Inferno Squad's retaliation against the Rebellion for blowing up Death Star 2.0 and snuffing the Emperor, set up in the recently-released single-player trailer, looks very promising. Just don't expect it to last very long. 

"We thought that around 5-7, maybe 8 hours is probably a good amount of time," producer David Robillard told Press Start. "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."