Seems the consensus is that its an automatic Dealer inventory update once that dealer gets invoiced from the plant for your truck prior to shipping. It could just be no one else noticed since they don't look? why would you unless you're being a bit obsessive if we've bought our trucks already and are still looking at our dealer's inventories...
i know i'm a little eccentric since ordering. other possibility is that some dealers inventory on their websites update quicker than others? We've seen the differing accuracy on the spectrum of communication for this stuff.
Again, not sure but i know what they told me at my dealer today (posted earlier) and all i can do is believe them for now. but i do, because it makes sense.