I went in through the "new" campground a couple weeks ago and can confirm that it is the same parking lot as before. They have improved it a bit with multiple picnic tables and patches of astroturf that I assume you are meant to set your tent up on. The road there is also smoother than the old road since they have some heavy duty earth movers. I believe they also have flush toilets and showers. Hopefully this will entice people to not poop at the hot springs as much :/ I am not sure about their policy on nudity but I know from their website that they allow reservations for large groups and I heard from someone that a large nudist group camped there at some point in the last couple months.