On January 21, 2009 at Launch Complex at the Tanegashima Space Center, with launch windows : January 22 (Thu) through Febrary 28 (Sat), 2009(JST) ) . Slightly before, on October 15,2008, "IBUKI" was press-released as nickname. "IBUKI" means a breath, in Japanese. And now "IBUKI" was already moved to Tanegashima Space Center, and is currently under the preparation before for the launch.
Please access to the web site of Japan Aerospace Exploration Agency for more detailed information of the launch: