Dont worry about mp campaign its on the fact sheet.

"A Complete Single And Multiplayer Offering: Play through the Main Campaign in single player or invite a friend online to play competitively or cooperatively in Campaign Multiplayer mode. Join 8-player multiplayer battles with your own upgradable avatar and climb the online Leaderboard to show the world who reigns supreme. Also including exciting new modes of team play for clans, a first in the Total War series."

"Also including exciting new modes of team play for clans, a first in the Total War series" This sounds interesting although im not sure what it will be :)