Felt like throwing my hat in the ring with the info I know is true. Everything I’m going to say is based on my understanding of mechanics explained to me by a friend.

You start in the future but can travel to regions of the city through various periods in time. Early years gives you wilds, typical grass and some paradox forms from S/V plus a lot of more archaic looking pokemon.

Every region has multiple “versions” past for more wild areas. Modern for story and city encounters. Future for future paradox forms (a few) and the city is more wild in the future, I think, kind of described as post war energy.

Starters are not the kalos starters they are available in the past portion of the game, and evolve using stones received in the future (where the stones are discovered).

There are a lot more megas than I expected. But he just rambled of a lot of names. Dragonite was the one that he kept talking about. He also mentioned Jinx, and Flygon, which I assumed due to the data mine.

He wouldn’t really share much more, I asked him about the starters and he wouldn’t tell me. Just not Kalos

He mentioned Zygarde a few times so I’m assuming you find it early in the game. Maybe it’s a Koraidon situation? Ride pokemon? He didn’t say that. Im guessing

It will be billed as a switch 2 game with a switch one version available I guess. Similar to how BOTW released on Wii U, but is meant for switch 2.

This is all I know. I couldn’t pry more than this. If we chat again I’ll try and get more details.