In an announcement earlier today, Niantic has finally revealed that the Pokemon appearing in the wild recently was actually Pokemon Meltan.
It seems like Ditto really loves this new Pokemon that it started copying his appearance and appeared in Pokemon GO. There’s still no enough details right now about Meltan since it’s a new Pokemon.
In a blog post published today, Pokemon GO has mentioned that Professor Willow just started communicating with Professor Oak about this new Mythical Pokemon.
Until there are no official details about the Mythical Meltan, Pokemon GO is encouraging to catch this new Pokemon and start collecting Ditto. There’s also a report that shiny Ditto is also frequently appearing today.