If enacted, these rules will affect the ball companies because they have to begin adding the USBC logo and making sure the other markings are correct. But other than the competitive tournament bowler, it won't make a difference for the average Jack and Jill league bowler.
Today, you can bowl in any league in the Philadelphia area, use a ball with a 3 oz. side weight or some other illegal static weight, shoot an honor score and get your award, because nobody from the association will ever see the ball because they don't make it a practice to check them. Going forward, I don't expect the USBC to send reps to the bowling centers to check equipment at the door, so realistically, if you own a ball that is round, it'll still be "legal" for league play. The only way it will become an issue is if someone in the league complains.