Square Enix has announced the launch dates for both Final Fantasy XI for the Xbox 360 and the newest expansion, Treasures of Aht Urghant for all platforms. On April 18 in North America, and April 20 in Europe and Japan, both of these titles will launch.

Treasures of Aht Urghan will launch at $29.99 USD for both the PlayStation 2 and Windows PCs, and does not require Rise of the Zilart or Chains of Promathia to play.

The Xbox 360 version will contain all the expansions, Aht Urghan included, and will launch at $49.99 USD. It's as of yet unknown if the Xbox 360 version of PlayOnline will contain the card game Tetra Master.