Well, that didn't take long. Players on the Silph Road have already figured out the naming trick for the two new Eeveelutions. Players can name their Eevee Sakura to guarantee it will evolve into the Psychic Type Espeon or Tamao to evolve into the Dark Type Umbreon. WWG has confirmed that the naming trick works for both Pokemon.
So why Sakura and Tamao? Sakura and Tamao were two of the Kimono Girls who owned a dance hall in Ecruteak City. Tamao owned a Umbreon, while Sakura eventually evolved her Eevee into a Espeon. Both trainers met Ash and his friends twice as Ash explored the Johto region, but Sakura was the only one who had any sort of personality.
As with the previous Rainer/Pyro/Sparky naming trick, it appears that the naming trick will only work one time.
In Pokemon Go, it appears that Espeon will be a far stronger Pokemon than Umbreon. Espeon's CP can reach Vaporeon levels, while Umbreon will probably be the weakest of the Eeveelutions.
Stay tuned to WWG as we bring you more news and tricks about the new Pokemon Go update.