IGN have just posted a new preview titled "The Characters of GTA IV" along with 5 new screenshots. It provides character profiles for Roman Bellic, Vlad, Elizabeta, Manny, and Brucie - five of the characters which were seen in the latest trailer. Check it out: IGN: "The Characters of Grand Theft Auto IV."
We'll have the new screenshots in our gallery as soon as R* give us the go-ahead to post them. Meanwhile, check out our updated Overview page, and keep an eye on the Characters page for updates which are due to occur shortly based on the new info.
Related Link: GTAForums Discussion