A week later, we learned that Pokemon's name was Meltan, and that it was a mystery to even the Pokemon world's most esteemed professors.
Additionally, a new set of Meltan themed Special Research is coming to Pokemon GO this winter: "New Special Research quests will be coming to Pokémon GO that will let you embark on a search for the Mythical Pokémon Meltan".
The investigation is still ongoing, but the long and the short of it is this: Professor Oak has discovered a mysterious Metal Box that is made up of the same materials as Meltan itself - being that Meltan is a Steel-type Pokemon that has liquid metal as a large part of its body. Today, The Pokemon Company is offering significantly more details, including how to catch Meltan.
A Mystery Boy is obtained by sending a Pokemon from Pokemon GO to Pokemon Let's Go, Pikachu! or Let's Go, Eevee! Although the Switch games can be played without connecting to Pokemon Go, they are created to work with each other, allowing you to transfer Pokemon back and forth between platforms. Those that you do transfer will end up in the Go Park, a new facility that replaces the Safari Zone in Fuchsia City. Subsequent transfers will get more standard rewards like Pokemon Candy, but the first time you transfer the Mystery Box is your in-game reward. Once the Mystery Box closes, you'll need to wait a certain amount of time and then transfer another Pokemon to Let's Go in order for it to open again. This game involves leading all of the Pokemon to the goal before time runs out; if you manage to clear it, you'll be rewarded with sweets, which you can feed to Pokemon to power up their stats.
After a serious of teases, it became pretty clear that the new hex nut Pokemon would somehow be linked to the upcoming Pokemon Let's Go titles.