Is Proximity Steering still free?

For a long time now I've been using Proximity Steering with my origin pool, and it seems to be working fine. But today I noticed the "Origin Steering" selector and the only options are one of Random, Hash, and Least Outstanding Requests. I've got Random selected, but now I'm wondering why Proximity isn't an option in that dropdown? I do see that my Lat/Long are still set correctly for each origin. I don't need to buy Traffic Steering, right? That's just if I want Geo steering?