https://m.reddit.com/r/pokemon/comments/50uy41/everything_we_know_on_gen_8_facts_hidden_hints/

A "knights armour" ghost/steel type.
A shetland pony. Normal type.
A fire type Red squirrel that keeps acorns in its mouth and spits them out like fire bullets. Potential fire starter.
A fossil pokemon based on an ancient ape, which references Charles Darwin's evolution theory. Rock/fighting type.
A British bulldog pokemon. Dark type.
A peacock bird line as the region's bird. Flying/psychic.
A grass type faun inspired line. Potential grass starter.
A bug line that evolves into a flying spider (Daddy Long legs spider). Bug/poison type.
A land dwelling "water snake" line. Potential water starter.
A tiny traditional winged 'fairy' that can evolve into a new type depending on what "fairy dust" you use on it. Fairy + Ice/electric/psychic/grass.
A sleeping dragon - this generations version of Snorlax. You wake it with gold. Dragon/ground and Dragon/fire type depending on gender.
A siamese swan with two necks/heads that face each other to make a love heart shape. Ice/dark type.
A basking shark pokemon. Water/electric.