'Supernatural' Season 8: Misha Collins Talks Castiel's Big Return And More

In short: We'll see Cas pretty frequently, in the first part of the season anyway, and this fall there's more of an emphasis on the angel's relationship with the Winchester brothers, especially Dean. 


Cas first shows up in the second episode of Season 8, which is a flashback to Dean and Cas' time in Purgatory, where they ended up in the Season 7 finale. I briefly spoke to Carver at the party, and he said that the writers are currently at work on Episode 9, and that Cas appears regularly in that first batch of episodes (though he didn't put a precise number on Cas' appearances). 


".....the brothers have been apart for a while when the Winchesters return to our screens. As for our favorite angel, it sounds as though he'll be somewhat more like the Cas of old, rather than the mentally disturbed or power-mad Cas we saw infrequently in Season 7. "


Can you talk about the first episode you're in? 
Yes, [Episode 2 of the season] is a flashback. We're picking up a year later, and it's a flashback of Dean's memory of Purgatory.


So it's back to ass-kicking Cas in Purgatory? 
No, not so much that. He's a little rough around the edges in Purgatory. It's hard on him.


You said earlier you had heard about broad strokes for your character this season. Can you talk about that a little bit? 
They don't have that many scripts written, so it's a little tough to speculate, but from what I've heard about where they're going and the scripts that I have seen, the Cas that we're going to be seeing is a Cas that is consistent with the old Cas that we've gotten to know over the years. It feels pretty honest to that character, so I'm excited about that.


Cas and Dean. They're a continual source of speculation, fan fiction, pornography…
Yep. I'm just always gratified that I'm in some small way contributing to any kind of pornography. It warms the cockles of my heart. Words chosen carefully.


Is there a particular emphasis on that relationship this season? Or is it just fighting together in Purgatory and desperate circumstances and all that? 
The scripts that I've seen so far have been dealing very much with that relationship between Dean and Cas. Whether that's going to be the most significant or a very significant thread throughout the season, I'm not sure, but my speculation is that yes, it will be fairly [important].


....For the other part of the interview with Misha you can go to the source (the link is at the end of the page) where you can find also the video!

Source