I don’t have much for you, but I am able to spotlight a few Galarian Forms in Development for either The Isle of Armor or Crown Tundra DLC. I have details on two Galarian Evolutions.

Numel/Camerupt: Seemingly based off of Geysers. Our second Fire/Water type.
Carvanha/Sharpedo: A less vicious, more docile counterpart. Water/Fairy type.
Herdier/Stoutland: A less friendly, and cute version. Lilipup is not included in this from what I had seem, it might stay the same, evolving into the forms. Dark Type.
The Karablast Line: Evolves without the aid of Shelmet’s Armor. Bug/Fighting type.
The Shelmet Line: Evolves whilst keeping it’s shell. Bug/Steel type.

Unfortunately, I have not seen any hint of Galarian Forms for the heavily rumored Wurmple line, though I have not actually seen that much.

Once I receive more, updates will come.