Probably...sometimes they are that way. Disc brakes count on the pistons seals to distort when they apply, and when released, the seals 'undistort' and pull the pistons back. There may be some assembly grease in the bores yet. I'd not worry about it 'til I drove it. Just stop regularly when you have not been using the brakes much and see if the fronts are hot; if so, then something is dragging.