That interview was proven to be fake. Also, the riddler also leaked a Gen 1 Grass/Poison type receiving new Alolan form, along with leaking Rainbow Rocket and the Battle Agency, so it is very likely we will be getting at least that new Alolan form if we dont get any other ones.
Two Z moves in one battle seems kinda broken... but I do love how they are improving the Rotom Dex. I hope the Poke Finder gets some sort of an upgrade too.