New Pokémon are coming to Pokemon GO, more info coming December 12th.

 
Update: Sprint will be the first US partner for Pokemon GO adding 10,500 Pokémon stops and gyms. Sprint locations will also feature in-store charging stations to keep your Pokémon GO sessions going even longer. Sprint also brings a great network and an unlimited data plan to support your search for Pokémon no matter where they are hiding.
Pokémon Go, which was one of the biggest mobile hits of this year and maybe this century so far, will be getting new Pokémon. The official Twitter account has said that the news will be coming on December 12th.
Lately Pokémon GO has been getting updates with Ditto being added, new tracker feature being added, and of course double XP. It’s pretty clear the past few months less people talked about the mobile game, but that doesn’t mean it’s dead. Many Pokémon still play this game weekly and daily.
What do you think this update will include? All the legendaries? Generation 2?