I work janitorial services at the building in which GF is located. GF employees stay late often, so I see quite a lot of info on their computers. Just some background on where this info comes from.

IoA:
The snubbul line are getting Galarian forms. They are now fairy fighting. Granbull evolves into Cerbull, a three headed, angrier Granbull based off of Cerberus.
New Gigantamax forms include- Golduck, Altaria, Jumpluff, and Druddigon.

That is all I know. Due to the fact that I only peek at screens, I don’t know any story details. The only other thing I know is that I heard two of the artists talking about Hariyama. I don’t know if this will result in a Galarian form or a Gigantamax form, but that is all of my info.