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I'll bet Verizon has tens of thousands of HTC Ones on the shelves of thousands of stores and warehouses that came off the assembly line over the space of dozens of months and having various versions of the software.
I do not think that Verizon pays any employees to open all those boxes, charge the phones, update them, and reseal the packaging. So you get whatever comes to hand at some shipping location.
The question that was asked was what did people get shipped for software versions. People responded with answers based on recent shipments so the OP can feel hopeful about not getting a phone that can't be unlocked. I'm not really sure what your answer provided other than sounding a bit snarky.