Sounds like my earlier report. I called BHQ and asked; the rep I got said "I'd check if we had them in stock but we don't have them yet, and we won't know if they're pinned or screwed until they get here." And then: "Why don't you contact Spyderco, they'd know."
But then, as you say, on BHQ's Instagram it's definitive: "Pinned." It's difficult to imagine that one display model would be made, pinned, for the photos; and the rest of the run be screw construction. Is that possible?
An idea: One of you could contact Spyderco and ask the same question that I did; see if we get the same answer x2.