Season 7 stars in a week, but I think I know who gets killed. The season 7 sneak peek gave it away inadvertently. Rick has a large spattering of blood on his face that he didn't at the end of season 6. It's the person to his immediate right. Since this is unsubstantiated theory, I will continue and say that there is an 80% chance that it is Maggie and a 20% chance that it is Abraham, as those are the only two that could possibly donate blood from that angle and proximity. Andrew Lincoln also stated that the episode should be watched with loved ones as it is pretty tough...Abraham is cool, but I don't think the audience is emotionally invested in him the way they are with Maggie. Anywho, should be a great episode and season.