There is zero chance that Nintendo is giving the specs to companies that make cheap aftermarket cases prior to the public reveal. if this was a branded case, from somebody that Nintendo has a history with, I might believe it. But, there is absolutely no chance that this is real.
They wouldn't be giving those specs to them. Apple doesn't give the specs of their next iPhone to these type of companies either, and yet we've gotten new upcoming iPhone dimensions leaked through cheap protective cases like these from China.
These units are assembled in China, so there's probably a correlation between that and why this gets leaked to these Chinese companies.
I don't know how likely it is that they start mass producing these accessories unless they're certain the dimensions they were given are accurate. I haven't looked into it, and these all seem to be out of stock currently. But this doesn't sound unfamiliar.Last edited by Hiku - on 19 June 2019