"In this video I show you how you can install your own custom SNES roms into the recently released Super Nintendo Classic Mini console". There's a lot more this trademark covers, but those examples should give you an idea of what kind of scope Nintendo is working with. Though numerous categories are not related to the gaming, it may have been included to protect the Nintendo Classic Mini Game Boy brand, notes Kotaku.
The trademark filing flew under the radar until Japanese news sites like Rocket News 24caught wind of it in recent days. Could Nintendo be plotting more, though? While North American, European, and Australian retailers received the Super NES Classic Edition in late September, the Mini Super Famicom didn't launch until October 5. "And the portable all-in-one system that doesn't deplete smartphone batteries could prove appealing to new fans", says Fortune.
So, does this mean that a Game Boy Classic is in the works?
As for why Nintendo filed a trademark application for an image of a Game Boy, it's possible that it is simply trying to protect its brand, securing the likeness of the Game Boy for official swag and making sure other companies don't try to copy its design. That move seems even more likely as the 30th anniversary of the first Game Boy will happen in 2019. Fun fact: Milton Bradley's Microvision released in 1979 is actually the first the handheld game console to use interchangeable cartridges (and it was also featured in the movie Friday the 13th: Part II).
Separately, there are reports that the Japanese company could be working on one more "Classic Edition", this time of the N64 console, which sold almost 33 million units during its availability from 1996-2003.