It wasn't long after the first images from the 2H18 preview that LEGO held in New York last month went up before an eagle-eyed fan realised that the torso print on the RA-7 minifig wasn't particularly droid like.
And now with the first official and complete images of 75220 Sandcrawler we can see that the torso print displayed with this set at the 2H18 preview show was indeed wrong. The correct print show below is quite clearly the chest and waist of an RA-7 droid.
Two questions remain: why did LEGO put the wrong torso piece out and what set does the piece come with? For the first it was either a mistake, an attempt to replace a lost/incomplete set at short notice or a teaser. As for the second your guess is as good as ours. The latest intel on the expected Imperial AT-Hauler and Imperial Conveyex sets does not include any mention of an Imperial officer or gunner.
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