UPDATE - As we speculated, it turned out to be an error.
Keymailer co-founder here. This was news to me when I saw this thread. I reached out to the management team and apparently this is, sadly, an error on our side. The game was incorrectly tagged when we imported the upcoming releases. Apologies on behalf of the company for any disappointment on this, as a Switch owner and a fan of Crash Bandicoot, I would have been as excited to play this.
Have you ever heard of Keymailer? I didn't know a thing about it until about 5 mins ago. Let's give the quick-and-dirty breakdown of what it is.
Keymailer is a one-stop-shop for content creators to get game keys directly from publishers and developers, plus it’s a bulletproof way proving who you are without laying yourself wide open to spamming.
In other words, a way for press/creators to get games. Why are we talking about this on here? Well it turns out the site has a listing for Crash Bandicoot N. Sane Trilogy on Switch. Now we're not quite sure where that info comes from, whether it's Keymailer typing in info themselves, or Keymailer updating their database when publishers reach out with news. It's a very slight hope of something, but let's hope it's true.