Okay, yeah, just found that. I think it has more to do with Eevee appearing in the Black/White 2 regional Pokedex than anything else.You missed this.
Eevee is a quite popular Pokemon already, so I don't think that this is really important.That, and the myriad of Japanese merchandise items featuring Eevee and the Eeveelutions. This amount of focus on one evolutionary family is unprecedented.