The balloon occupying the bulk of the frame features a color representing each of Eevee’s existing Eeveelutions.
However, there’s a ninth color incorporated into the design that hasn’t been accounted for.
Also, what would be the fun in assuming that?
It’s also been the longest gap between new Eeveelutions by quite some way.
Eevee’s first three evolutions were added to one generation later viaGold & Silver.
That’s if the new Eeveelution is a new throw in, of course.
It won’t be long before the ban hammer falls on them.
via Pokemon
