While Microsoft's US site is still not taking pre-orders for the Lumia 950 and Lumia 950 XL smartphones, another US retailer, B&H Photo, has posted up pre-order listingd for both of the upcoming he Windows 10 Mobile devices.
The retailer is asking for $549.99 for the Lumia 950 and $629.99 for the Lumia 950 XL, which is a bit lower than Microsoft's original $599 and $699 prices, respectively. The B&H Photo listings show that they expect the smartphones to start shipping from them on December 15. However, as always, shipment dates for pre-orders can change ahead of launch.
Thanks to Kurt for the tip!