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Nintendo starts shutting down online play for Wii U and 3DS, months ahead of schedule
(www.engadget.com)
That article is a bit out of date and wasn't really true anyway. The people who are creating Pretendo, who wrote the blog post this article is based on, did an update on the situation, specifically calling out the media for their sloppy articles:
With that said, some outlets did a less than stellar job at reporting our last post, not covering some topics fully or accurately.
TL;DR: Many of the issues have already been fixed, even going so far as there are now entirely new servers in place to act as a proxy for Amazons servers to work around some security related incompatibility issues.