Hi,
I open this little thread to reference all possible hints of Gen8 in Alola.
I noticed 3:
-Backpacker Perdy which you can find in Vast Pony Canyon which speaks you about explore the world after your island challenge in USUM and says "There are so many undiscovered Pokemon"
-The dark Granbull in the police station
-The guy speaking about a sandman Pokemon in Iki Town (a future Ground/Fairy Pokemon?)
Artwork of Fakemon Zable from ???