By chance, did it have a "ships by" sort of date when you went to purchase this item? It might have been something on backorder, or it went to backorder RIGHT after you ordered it. So it's either just waiting to come in, or you've now effectively pre-ordered it. As I'm fairly certain that is what it says when you pre-order something that doesn't have a date, as Amazon doesn't have a date for when they'll get their shipment.