Considering that this isn't a mere "revision", and some games will ONLY work on it (like Xenoblade Chronicles), calling it the "New 3DS" and making it look so similar to the existing 3DS is a TERRIBLE business move. Everybody is going to think this is just a model revision, meaning sales will be hurt, plus I can see a lot of people buying Xenoblade Chronicles, or other games, and then not being able to play them on their vanilla 3DS.
As soon as a system has exclusive games that can't be played on previous systems, it needs it's own identity. People are comparing this to the Game Boy Color, but there was a clear difference between the OG Game Boy and the Game Boy Color. Color itself obviously being the biggest differentiator, but also the system looking different enough.