I spoke to Amazon concierge and they have no idea when the stock will arrive. OneCall representative gave a 30 day period but they have a very very short waitlist.
Amazon's customer service people are NEVER any help in these situations. I have called repeatedly in the past about when a new product, which has already been released, will ship, and they never have any insight. Other members have posted saying that they have no actual visibility into when they will receive NEW inventory, and my experience with them confirms this. They just say, "when we get it in stock, we'll email you to let you know." Invariably, the product actually ships to me before customer service even knows they have it in stock. So, I have stopped wasting my time calling them.
Experience has proven that Amazon receives brand new (just released) cameras and ships them on the same day as, or within a day of, when the other major camera stores like B&H and Adorama receive and ship their first camaras. Which is why I'm so interested in what people are hearing from those other stores.