SEGA Blog announces the Caesar in Gaul campaign is now available for Total War: Rome II, Creative Assembly's strategy sequel. Accompanying the expansion is a new patch to update the base game, and the patch notes for this can be found here. Here's a Caesar in Gaul trailer, and here's word on the pack:

Caesar in Gaul, the first campaign expansion for ROME II, is available to download now. Bringing Caesar’s Gallic war to life in thrilling detail, Caesar in Gaul offers a tighter scope in terms of time and geography than ROME II’s original grand campaign.

Playing as Rome or one of the key barbarian tribes in this seven-year conflict, players will experience a campaign map that represents an expanded, more detailed vision of Gaul and the south coast of Britannia. With multiple turns per year, this expansion also brings seasonal changes, with new gameplay effects and stunning visual alterations.

Caesar in Gaul also offers players a new historical battle to challenge their generalship. The Battle of Alesia, the decisive engagement of Caesar’s war in Gaul, offers a unique tactical situation in which the Romans must survive a twin-pronged onslaught of the massed Gallic forces.