A few evolution methods in these games were changed from previous games.
These changes are,
Eevee into Leafeon, being changed to being exposed to a Leaf Stone. The original method was leveling up near a Moss Rock.
Eevee into Glaceon, being changed to being exposed to an Ice Stone in order to evolve.
Eevee into Sylveon is now high friendship, and knowing a Fairy move instead of Affection.
Charjabug now evolves when being exposed to a Thunder Stone instead of being in an area with a magnetic field.
This makes me wonder... since the expansion pass will be bringing back older Pokemon, how will they handle other "gimmicky" evolutions like Nosepass and Magneton? Will they also be changed to the Thunder Stone? And what about Crabrawler if it returns? I'm wondering what you guys think.
Changing how to evolve Eevee to Leafeon/Glaceon by using Leaf Stones/Ice Stones in Galar region is more fitting for me, because it might be tricky for Game Freak and co. to think on another places in new regions that have those special rocks. This, in turn, makes me grateful that Ice Stones were added in Alola region back then, and I'm also grateful that some evolving methods has been streamlined.
I think the Eevee evolution changes make sense, yet equally with a rotating weather pattern, they could have simply changed it so, for example, Glaceon evolved if leveled up in a snowstorm. Could have kept the interesting charm, but still remained family accessible.
I wonder about form changes i.e. Rotom/Deoxys. Will they add the appliances/meteors?