Granted, but you need either Farmer Milk or Rage Milk items to evolve them. You may ask how to get them? Well, listen closely: In new region, there is farmer on Route 531. You can only get to this route after you beat E4 and complete every wing of new Battle Tree, which is now super hard. After that, you'll get Key Item that'll let you on said route.
Now, you have to complete small side quest for the farmer: You have to catch 100 Tauros and 100 Miltanks in Pokéball without hurting them (Safari style). After that, you have to solo E4 with Tauros and then with Miltank. After that, you get to choose one of the items.
And when you use the item to evolve your Pokémon, your save file will be erased.
Anyway, I wish for next region to be based on Central Europe.