The cast talks about episode 11 and a trailer. Again, DO NOT SEE THIS UNTIL YOU HAVE SEEN THE EPISODE!
And here are two interviews, one with Robert Kirkman and one with Andrew Lincoln.
And here are an interview with Robert Kirkman where he says:
There are some things coming up in the 3rd season that I can happily and proudly say exceed some of the darkest things that we’ve done in the comic. I think people are really going to be pretty shocked with a lot of stuff that’s coming. The show is gonna have teeth, the show is not going to be a watered down version of the Walking Dead [comic]. Seeing it thus far, you’ve got zombie autopsies, Sophia, and there is definitely a lot of dark stuff going on in the show, and it’ll continue.