Hal 9000 said:
And a third thought: the poster strikes me as very photoshopy. I wonder if perhaps they painted the elements and composited them digitally. I'm not a graphic artist by any means, so I'm just wondering. I have been avoiding spoilers, but I am very curious why Luke is missing from it!
Probably, as if you notice, that they slightly rearranged things between the Portrait and Landscape versions.