I found a 2017 at 1,000 over invoice last week. Unfortunately the dealer has to wait to fix the recall of the seat belt (no fix available yet). So it maybe another month before I can get it. So don't waste your time on the 2017's. Most dealers don't even know about the recall until they do the paperwork.
Full documentation on this recall should be available October 1st, at least that is what Ford is telling the dealers. How many trucks will fail the test and how available replacement parts are is a different issue. But I suspect dealers will prioritize their unsold inventory over customer repairs.