It is from the Wonderfest, Summer 2010, in Japan. It is a US Recovery walker.

You can see this model painted along with many others from future expansions at the following site.

miniaturereview.blogspot.com/2011/01/dust-tactics-monde-du-jeu-2010.html

miniaturereview.blogspot.com/2011/01/dust-tactics-upcoming-units.html

wow wat do the recovery vehicles do as i cant read japanese

those armoured troopers look awesome anyone know anything about them?