I personally am going to play a Jedi but not sure which class yet. The classes are below.
Trooper; Commando and Vanguard
Smuggler; Gunslinger and Scoundrel
Jedi Knight; Guardian and Sentinel
Jedi Consular; Shadow and Sage
Bounty Hunter; Powertech and Mercenary
Sith Warrior; Juggernaut and Marauder
Imperial Agent; Operative and Sniper
Sith Inquisitor; Sorcerer and Assassin
Trooper; Commando and Vanguard
Smuggler; Gunslinger and Scoundrel
Jedi Knight; Guardian and Sentinel
Jedi Consular; Shadow and Sage
Bounty Hunter; Powertech and Mercenary
Sith Warrior; Juggernaut and Marauder
Imperial Agent; Operative and Sniper
Sith Inquisitor; Sorcerer and Assassin