The Cranston leaker is not real, though they guessed the gimmick PARTIALLY correctly. Call me Oshawott.

Smoliv becomes Pimienta, a waifumon. She has a bunch of half cut olives as hair and dress and looks to be the “pit”. Greased up in olive oil.

Tauros get’s a cross regional evolution called Bullwark. It’s a hunched over minotaur with crazed red eyes and black hair all over. It’s Dark/Fighting. Pokédex lore states that human interaction with this Pokémon caused it to change it’s temperament for the worse.

Lechonk becomes Chonqueen, based on the “You can put lipstick on a pig” idiom. It’s really fucking weird looking and reminded me of Ms. Piggy.

Kikireaper the final stage of a day of the dead-ish Rooster regional bird. Masuda hinted at this on Twitter. Ghost/Fighting.

The shattered crystals at the end of the trailer are the main gimmick of the games, refractions of the past and the future through crystals. Similar to mega evolution you get shard of these crystals and can transform into past and future forms. Hisuian Pokémon are not past forms, they’re considered tangent evolutions.