From the release:
Star Wars: The Old Republic – Onslaught, the latest expansion launching October 22, continues the epic saga of the Old Republic era as the conflict between the Galactic Republic and Sith Empire reignites, engulfing the galaxy in the flames of war. Explore the ancient planet of Onderon, watch your back in the lawless port of Mek-Sha, face deadly creatures on Dxun, and return to war-torn Corellia in the latest Flashpoint as you battle through a key shipyard facility – with all-new Tactical items and Set Bonuses to enhance your personal playstyle. Darth Malgus has returned. Will you stand against him, or join his apocalyptic campaign against the Republic? Your choices will determine the fate of the galaxy….