Supernatural 8x16 Castiel voice?

We can hear Cas' voice over Sam's one when he says "DEAN". And then you can see a black feather on the bed between the brothers. EDIT: WOAH, 3790 visualizations in 1 day?! Oh gawd. Btw, I'm aware this video is on tumblr already, but my original post is here, if you want to reblog ^_^ http://castiellelovesbees.tumblr.com/post/44369368197/castiel-presence-in-spn-8x16