Wait, Kenny's VA said to keep hope alive?! The man's alive I tell you! ALIVE!
My joyous outburst notwithstanding, I think Kenny's fate is on hold right now. As someone said earlier, he's like in some kind of purgatory where we won't know what truly happened to him until Season 2. If they bring him back, then he survived. If we don't see him or he isn't referenced, then he died with Ben/saving Christa. Here's hoping the guy managed to get out ok. *crosses fingers*