I also thought it has ended. I haven't flown Frontier for a while, but just planned a vacation with my family. I signed up the kids with their own accounts and a message popped up that said they would be eligible for Quick Ascent if they have elite status with another ff program. They do not have this, but I sent my NW Silver statement in (to the email above) and they upgraded me in a few days. I had my husband do the same with his elite statement and he was also upgraded. They do not advertise this, but simply tell new people enrolling in the program. This was just a couple of weeks ago, so it's still going on. There also does not seem to be an expiration of the upgraded account status, but I'm not sure.