Another 24 Cast member for Season 8 confirmed (Annie Wersching)

From Ausiello

Question: Will Annie Wersching be back next season on 24? I hope so. The Jack-Renee dynamic is one of my favorite things about this season. --Josh
Ausiello: Not only is she coming back next season, but exec producer Howard Gordon tells me that "some part of her past will be necessary in the context of the next crisis." Gordon also confirms that Cherry Jones' President Taylor will return for the Big Apple-set Day 8. "Cherry truly defined this character and fashioned our first truly aspirational President since David Palmer," he says. "She brought an emotional weight and intelligence that exceeded even our expectations.

So for those keeping score at home, thus far Chloe, President Taylor, and Renee are the only three cast members confirmed so far.  Here's hoping Jack and Tony (in some capacity) are announced soon.