Bioware has long stated that there will be no non-combat classes. If someone can find me a interview or some piece of VALID info that saids otherwise than please comment here, or pm me the said info.
If my memory is correct, and if my summary of their statement was "doesn't make the player feel heroic." This is my shorten, might be correct summary of one of their interviews. I can see why they think since this will a be heavy, heroic, action filled story. Guess there is no room for dancers to entertain the weary travler on his travels. I bet you guys already know what i'm about to say. But first let me remind you, behind every army is a supplier of goods.
One thing I felt SWG did deliver on was it's crafting system and the 4 trader classes that delt with various parts of the trade. For example for those who nevered play any version of the game, if you wanted a set of armour you didn't spammed "looking for trader to craft UBER l337 @4m0ur!" No, instead you stated you were looking for a armoursmith, do we know anything of their crafting and remaining classes? No, we don't...yet
So let me move onto another non-combat class that impacted the game. Entertainer, these are important for many, many reasons. In older versions of the game, they could heal fatigue. And more important they could re-design your character as you saw fit. That's right, no longer being stuck with a toon you didn't think out their looks. Their moves improved various stats and etc.
I know I am using a lot of swg to back up any point I have. But don't mistake that with my main objective, to prove that without people behind the scenes even the mighty hero will fall.