Here are some of what we can expect for season 3, don't read if you haven't seen season 1 or 2:
24 (TV): SPOILERS AHEAD. Ok for those Aussie and UK fans who've not caught up yet with the end of Season 2, look away now because executive producer Howard Gordon talked with Zap2It <http://tv.zap2it.com/news/tvnewsdaily.html?31959> this week about what we can expect next season after the shock events in the aforementioned finale. The most notable change will be a time jump - "It's going to be about two, two-and-a-half years later. Many things may have changed. It's a fair amount of time for old wounds to have healed and new ones to have been inflicted". Therefore its likely the cliffhanger elements involving Palmer and Jack will only be referred to rather than solved on the screen. The cast looks to undergo a shake-up as well with the characters of Sherry Palmer (Penny Johnson Jerald) and Kate Warner (Sarah Wynter) are not signed on as regular cast members next season though that news is surprising as Wynter indicated things get 'steamy' next season between her and Jack to the Aussie press recently. Their exclusion however does not mean they're entirely out, and it seems almost certain they'll appear in a few eps much like Nina (Sarah Clarke) did this year - "Nothing is impossible. In fact, Kate does make an appearance, but she's not been cast as a regular. The same goes for Penny. This is real fluid. They are characters that live in our universe, and it's entirely possible that they'll be back".
Also:
On "24", Kiefer gets a partner in the form of field op Chase Exen whilst the storyline may revolve around "a narco-terrorist named Ramon Salazar who is head of his organization and his South American general Hector Moya, an elegant gangster with a even more elegant, but savvy girlfriend Claudia".