I was on 10.16 and got FSD for the first time on Monday, I showed in TeslaFi (had a temp account) but as best I could see I was the only one. For what it is worth after getting stuck on the .16 branch and unable to get FSD, I put the software update preference to standard from advanced to stop me from getting ahead of the FSD version again. On Monday morning I got the update. So at least some people are getting FSD that are new to the program.