Thanks to ODI at DarkUFO for this find. Here is a closer look using the maximum resolution promo pic. It appears Claire, Aaronless, is hanging out at Jacob’s cabin.
It is important to point out one more possibility: the onset promo pics sometimes catch crew members that would normally be completely out of frame. This looks like Claire, without a doubt, but that is a possibility.
The big question is: how does Claire get back together with Locke? And what happened to Aaron?