So um, yeah, this, I don't have a source or anything, but, yeah, this.
In all honestly, maybe it's fake, but Synchro evolution was a given for me ever since Ash-Greninja appeared. This just confirms what I've been thinking for a while IF it turns out to be real. Even if it's not, I think Synchro evolution is the next big think. The way I picture it, it's that your pokemon appearence changes to ressemble your trainer, so that way any pokemon with a Synchro evolution would be different depending on how you customize your character. Would be neat, but still, take it with a block of salt.