I don't think most casual fans will really notice much outside of the first few games. I remember showing it to a devils fan who is more casual and she basically just said "why does it look weird" and then moved on.
I personally don't like them and don't think there was enough change to warrant changing anything. Once they came up with the one they have now, they should have shrugged and stuck to the old ones. But when you dump all that money into researching and redoing the jerseys, I guess they felt like they had to change something to justify it.