My money is on this being a controlled leak. It's just too suspect that we learn so much about upcoming Nintendo titles but almost literally nothing about the NX launch lineup and hardware. Not to mention, the format of the leak is odd (with a lot of ancillary details).
The Pokémon codename is also really meta after the rumors before X/Y, and there's been so many high profile Nintendo leaks lately.
Namco Bandai leak? "Smash 4... and other titles
"
Nintendo leak? "Everything you know about, obvious stuff and late localizations... and more
"
NX? "Zelda, of course... stay tuned for more details
"
Mother 3? "It's coming... or is it?
"
It just seems like thinly veiled hype building. With that said, I'm legit pumped for more Style Savvy so mission accomplished