Of all the Pokémon in the Pokéworld, Eevee remains something of a rarity. People have long speculated that there would be a similar naming trick after the update to control which of the five Eevees you'll get after an evolution, and it turns out that speculation was right. So, here they are: if you want your Eevee to turn into Umbreon, name it "Tamao." There are more Eevee evolutions in more Pokémon generations to come, so we assume that there will be a similar trick to those as well. To recap, there are now five potential evolutions for the little Eevee you've picked up.

Source: Forbes February 17, 2017 15:14 UTC