The expansion caps a busy week for Pokémon Go, which included turning Sprint and Starbucks stores into PokéStops. It's not surprising that Niantic is going all-out as the year comes to a close, though. The company had a runaway hit with the mobile game, and has done everything it could to keep you coming back and ride that success for a little while longer. That's especially important in December. Winter weather makes it harder to go Pokémon hunting, and visiting family during the holidays is probably more important than evolving your Eevee. An update like this could make the difference between playing in 2017 and letting your mind wander.