Wait a second. Netflix's service can actually stream 3D movies? No, I don't think that is possible! Well, not by current household technology, at least. Netflix's streaming service was made primarily for PCs before they were added to the video game consoles. You can use the same Netflix account on your computer to run Netflix on any of the supported consoles. So far, I don't think Netflix can stream 3D movies. They may possibly rent you physical 3D movie Blu-ray discs, but I doubt their streaming service actually has any 3D support. Frankly, even if they did, that may surely increase the price of your account's monthly bill by a lot!
I'm thinking maybe Nintendo has a plan to present 3D movies through some other independent method, and it has nothing to do with Netflix whatsoever! In fact, this means Nintendo can distribute 3D movies to all countries, as Netflix's services are limited to the United States and Canada only! I'm pretty sure Japan wants to have 3D movies somehow, and it won't happen via Netflix, even if that were possible, unless Netflix decides to expand their services globally, but I really doubt that can happen anyway.
The thing about Netflix coming to the Nintendo 3DS is merely a matter of convenience, as the Nintendo 3DS is much easier to carry than most laptops. Additionally, it said you can connect your Wii with your Nintendo 3DS in a way where you are watching a movie on the 3DS, and then you can pause it at the service before continuing watching the same movie on your TV via Wii from the very same point where you left it off on the 3DS! Also, keep in mind about the fact that Nintendo of America made a deal with AT&T to allow free access to over 10,000 Wi-Fi hotspots in the United States via the Nintendo 3DS! I guess, in a way, that seems to be a cheap replacement for the lack of 3G connection in the Nintendo 3DS.