Bets on the final three: Warlord, Paladin, Ranger. Lots of company for the fighter, very little for the rogue (in terms of scope of ability, not power source). We've gotten the most word about these from all those mentioned in Races & Classes, so that's where my money lies.
Displeased they're keeping the barbarian. That's a background choice, not a damn character class.
/wanders off muttering about 'villager' and 'city-dweller' classes next...