Commemorating a decade of Final Fantasy XI, Vanafest 2012 revealed a new expansion for the MMO. Seekers of Adoulin will promise new lands, new tales, new jobs—including the "Geomancer," confirmed on the expansion's official site.
Check out its official trailer above. It's mostly text, though the background of the "new tales" clip might give you an idea of what's to come. That's followed by some work-in-progress in-world renders providing a look at what's to come. The expansion is coming in 2013 for PC and Xbox 360.