Taken from Bandai's Twitter page, a promo image with the caption: "Let's go!".
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A sign of things to come?
From my limited understanding from clicking through to the blog linked off of their twitter account:
It is just a sign of commitment to the Star Wars line of models. The blog seems to indicate that it is the 1/48 pictured.
Whether it is a sign of things to come (AT-AT), I can only hope!
Said blog: http://bandaihobby.hatenablog.com/