The Oak Hill courses (green and yellow--I did both, and found the yellow to be pretty yellow-ish for the first 3 controls, but then orange-ish to brown-ish for the rest!) are regular controls, with codes to match clues, no punches or QR or anything like that--just self timed. They have been out since the beginning of May and will be there until the end of October.
The Burnt Mountain courses (red and brown) were supposed to be out starting this weekend, but the UNO web page for this
says that permission has not been finalized yet. I haven't talked lately to my clubmates who are setting this up, so don't know any more than that. When/if it does go up, it's supposed to stay up through the summer into September. Regular controls with QR codes.