Yeah, I think that was intentional and Nintendo may have even made some sort of deal to get it to the platform as fast as it did considering how long it took for the Wii U to get a port. They left May wide open, have a Mario pack available at launch, and have a timed eShop exclusivity for the game as well so I think all the signs point to Minecraft being the big game of the month in my eyes.
I think it's worth noting that the only portable versions previously were the Pocket Edition (which was not on the 3DS). This will not only be the first time a console version was portable, but it will have console controls as the default input (as opposed to touchscreen controls) as well as the console features, which I believe are closer to the PC version than the Pocket Edition which is more limited in some ways, including world size, if I'm not mistaken. The Switch version will also have split screen multiplayer, which I believe is a console thing and not a Pocket Edition thing. Yet, besides the Pocket Edition being the least developed version, it also is the highest selling, which means that not only do people want to be able to take Minecraft on the go, now they'll be able to take the console version on the go and also be able to play the same game on a TV as well.
It has some massive sales potential for the platform.