Rumours I've heard are that nothing will be sewn onto the jerseys... not even the logos. It'll all be pressed on, in an effort to make the jerseys lighter. At the World Juniors, at least USA and Norway had pressed on numbers, which obviously offer a much less quality item if you collect authentic/game worn jerseys.
As mentioned, the only reason RBK and the NHL will love these new jerseys is because of the almighty dollar, and a lot of them. The players will hate them, the fans will hate them, and depending on what they do to the replica jerseys you buy in stores, retailers will hate them.