it says 3rd variant was introduced in 2011 but it's already included in http://lego.wikia.com/wiki/8018_Armored_Assault_Tank_(AAT) which was released in 2009
it says 3rd variant was introduced in 2011 but it's already included in http://lego.wikia.com/wiki/8018_Armored_Assault_Tank_(AAT) which was released in 2009