An Eeveelution that has 3 formes? I mean really? And for it to be appearing in the Genesect Movie instead of the Pikachu and Eevee Friends short film? That would be too good to be true, since it would not be likely to be appearing in the Genesect movie itself. And besides... why put in 3 formes for an Eeveelution? It would kind of change the concept of the whole "Eeveelutions" thing, it gave us a choice on which Eeveelution to use. Having one that can change forme would make everyone want to use it, meaning the other Eeveelutions wouldn't be used. :P
Latter part of new rumors kinda sounds familiar to me. I dunno why.
As far as I know, anything coming from 4chan is often made up by it's members and guests there and yeah... they often make up these kind of rumors from their speculation just to draw a spotlight onto themselves.
Let me be honest, everything I have heard from 4chan has always been confirmed false.