Scott, I sure hope things don't start changing, but I'm not real confident. Still here in Virginia, if a vehicle is actually used for Farm Use, we still don't even need license plates. You can buy some "Farm Use" tags at the store, or just Paint "Farm Use" on the back of your truck. The only thing different lately is instead of the truck being covered under the farm insurance, you now are required to pay a little extra per vehicle. We also have state issued Farm tags, but not sure about any special privleges with those. The only trucks I ever see with DOT numbers are some long distance heavy haulers.
Keep us posted on how things turn out in your state.
Bill