Does anyone know if the new armors that are being added are going to be added to the existing smithing tree or will they just be found on dead bodies and what not. Im wondering if i have to increase my smithing on my main character or not.

IIRC there were some files found in the initial digging stage suggesting that Stahlrim Armor will be craftable. I can't say for Bonemold or Nordic.

It would be easiest put them under Advanced armors.

that is true