UPDATE: It turns out that the Jon Snow poster was only the first of several. We've updated this story with a gallery that inlcudes posters for Nymeria Sand, Oberyn Martell, Daenerys Targaryen, Melisandre, and Daario Naharis. We will continue to update the gallery with additional posters as they are released. The original story follows.
The poster features the face of Jon Snow's face as it appeared in the Hall of Faces at the House of Black and White in the first teaser trailer for the new season.
The true fate of Jon Snow is the largest lingering question from the show's fifth season finale. Cast members have repeatedly insisted that Jon is dead, including Kit Harrington himself, but HBO has featured him heavily in the show's early marketing for the new season.
Game of Thrones returns to HBO on April 24.