Each class only allows 2 at-wills, races (like human at level 1) might allow extra or racial at-wills, at least 1 encounter power (more at higher levels) ,1 daily (more at higher levels), standard attacks, possibly defensive attacks (we haven't seen all the combat options yet. Don't forget Marks and abilities to slide-push-pull opponents.
Seems like a non-caster character, especially at first level, has more combat options than ever before. And the idea was to cut down on the game-slowing-as-I-look-through-pages-of-choices casters had.