From what I saw Ford's building 500 FORD GTs, I presume that's of the 2016's and no mention what-so-ever of more. Sounds like a very small production run. I own a Gen1 Lightning, for 93-95 they made just under 10,000 by what I recall. I see other Gen 1 Lightning's now about once a month.
I wonder how many 2005-2006 FORD GT's were purchased with the idea of keeping the miles as close to as delivered or simply not driven at all. Seen a fair share of still-in-the wrappers FORD GTs roll acro$$ the big auction TV'd stages.
Personally as far as keeping "limited edition Fords" out of the hands of investors, I like the Ford COBRA JET Drag Car's where FoMoCo produces new versions every year like clockwork and currently about $100,000 each...New improved versions every year has to give the "collectors" a fit. Supposedly race-cars do better with provenance, so any brand new COBRA JET Drag Car that's been stored away is in a whole new ballpark as far a expecting collector values to pay-off..