Savage is making a lot of strides in improving the looks of the 110's. Besides the smooth barrel nut, there's also...
Elimination of the old flag-style cocking indicator/bolt release. As you can see in the pic, the cocking indicator now protrudes through the rear of the BAS (bolt assembly screw).
New bolt release located in the front of the trigger guard. Not only does it look better, it's a lot easier to use as well.
Even thought the new AccuStock looks just as chintzy on the outside as the old synthetics with hideous mold lines that need filed down, it's worlds better as far as bedding and rigidity go.