What on Earth does he mean? He seems to be know what's going on but denies it's either a reboot or gen 8, and says it's something nobody's prepared for, but is a main series RPG. He also claims it's something Eevee related but seems to be sort of dismissing the possibility of an eeveelution. What else could it possibly be? I don't think a remake would count as something the community isn't prepared for, so I'm really stumped.
And yes, I know he could just be doing this for attention, but I feel like he's one of the leading people who keeps track of Pokemon news, so I feel like he would be aware that if he's misleading people his reputation will suffer.