Since it has been mentioned a few times at GDC and around the boards, I think it is now safe to confirm that we are going to have 6 character classes for you to customize your Commander Shepard to be as you play Mass Effect.
Soldier â€“ Soldiers are Combat specific characters.
Engineer â€“ Engineers are Technology centered characters.
Adept â€“ Adepts are characters especially skilled with Biotic abilities.
Infiltrator â€“ Characters who blend their Combat and Technical abilities.
Sentinel â€“ Characters who balance using Biotic abilities and Technology.
Vanguard â€“ Characters who mix their skills at Combat with their Biotic abilities.
We will have more on the different classes in upcoming updates. So stay tuned.