I don't think this is a "spoiler" since Sutherland stated this in the interview from the fox/24 website, but:
"The cast changes show to show and I know I am going to be one of those people". - Sutherland.
It is at 2:35 of the clip.
Thanks for the link. That was great. :) Jonny did you see the interview link that RedBlooded posted? You were right the actress who plays Chloe is very pretty. I had never seen her off the show before and she really is pretty. I will not question your taste anymore. :)