Microsoft has released a preview video for its upcoming Celtic expansion to Age of Empires Online. With the content, players will be able to take on these “masters of metalworking and crafting” as they explore the northern realms and become acquainted with new units, such as the Woad Raiders, Druids, and Swordsmen. The expansion will also include new gear and rewards. It’s currently listed as “coming soon.” Check out the video and screens below. Thanks, EvilAvatar.