HYC received the following information from Amazon this week: UPDATE
Hello from Fulfillment by Amazon, Stay in stock during the holiday selling season by making sure your shipments arrive at Amazon well in advance of key shopping dates. Inventory should arrive at our fulfillment centers by the dates listed below to ensure your products are available for customers during this peak season.
Inventory for Black Friday and Cyber Monday should arrive at Amazon fulfillment centers by November 7, 2017.
Inventory for Christmas shopping should arrive at Amazon fulfillment centers by December 1, 2017.
Inventory for 2018 should be sent to Amazon fulfillment centers no earlier than December 17, 2017. Until then, please only ship items to Amazon that will sell in 2017.
Be sure to allow ample time for supplier and/or carrier lead times. It may take longer to get inventory to Amazon fulfillment centers during the busy holiday season.
Keep an eye out for more information on preparing for the 2017 holiday season in the coming weeks. Thank you for selling on Amazon. Sincerely, The Fulfillment by Amazon team