Pokemon Go - Generation 8

When generation 8 comes out, I am hoping that the Lets Go Pikachu/Eevee will be able to send Pokemon from there to gen 8. And with that, I am hoping to be able to send like the birthday and Christmas pikachu/Raichu over from Pokemon Go to gen 8.

I wonder if those Pikachu/Raichu/Pichu will be able to go there and if not okay but if so, anyone got any of those to trade since I heard Pokemon Go has a update for trading or I can trade from gen 7 usum.

I hope so.

The event pikachu with hats can't be transferred from Pokemon Go to Lets Go Pikachu/Eevee so it's highly unlikely you'll be able to get the hat pikachu in to gen 8.